1. Fact Triangles 9
x, ÷ 3 3

2. What are Fact Triangles?
Fact Triangles are tools that can help you memorize your basic facts.
The “x, ÷” printed on the card means that it is used to practice multiplication and division facts.
The “*” symbolizes the product of the other two numbers.
The four number sentences developed from the triangle are called fact families.

3. What is this triangle’s Fact Family?
3 x 3 = 9
9 ÷ 3 = 3 *9
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 3 3

4. What is this triangle’s Fact Family?
3 x 2 = 6
2 x 3 = 6
6 ÷ 2 = 3
6 ÷ 3 = 2 *6
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 3 2

5. What is this triangle’s Fact Family?
6 x 1 = 6
1 x 6 = 6
6 ÷ 1 = 6
6 ÷ 6 = 1 *6
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 6 1

6. What is this triangle’s Fact Family?
1 x 0 = 0
0 x 1 = 0
0 ÷ 1 = 0
1 ÷ 0 = 0 *0
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 1

7. What is this triangle’s Fact Family?
4 x 3 = 12
3 x 4 = 12
12 ÷ 3 = 4
12 ÷ 4 = 3
* 12
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 4 3

8. What is this triangle’s Fact Family?
3 x 10 = 30
10 x 3 = 30
30 ÷ 3 = 10
30 ÷ 10 = 3
* 30
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 3 10

9. What is this triangle’s Fact Family?
2 x 2 = 4
4 ÷ 2 = 2
Why are there only 2 number sentences? *4
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 2 2

10. What is this triangle’s Fact Family?
5 x 10 = 50
10 x 5 = 50
50 ÷ 5 = 10
50 ÷ 10 = 5
* 50
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 5 10

11. What is this triangle’s Fact Family?
2 x 5 = 10
5 x 2 = 10
10 ÷ 2 = 5
10 ÷ 5 = 2
* 10
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 2 5

12. What is this triangle’s Fact Family?
3 x 5 = 15
5 x 3 = 15
15 ÷ 5 = 3
15 ÷ 3 = 5
* 15
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 5 3

13. What is this triangle’s Fact Family?
* 16
4 x 4 = 16
16 ÷ 4 = 4
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 4 4

14. What is this triangle’s Fact Family?
5 x 5 = 25
25 ÷ 5 = 5
Why are there only 2 number sentences?
* 25
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 5 5

15. What is this triangle’s Fact Family?
4 x 5 = 4
5 x 4 = 4
20 ÷ 5 = 4
20 ÷ 4 = 5
* 20
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 4 5

16. How do find a missing number on a Fact Triangle?
If one number is not there, you need to figure out what number is missing.
If the “*” number is missing, we know that if you multiply the other two numbers it equal the “*”.
If another number is missing, you take the “*” number and divide the other number given to find the missing number.
Let’s try a few!

17. What is this triangle’s Fact Family?
1 x = 3
x 1 = 3
3 ÷ 1 =
3 ÷ = 1 3 *3 3 3
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 3 1 3

18. What is this triangle’s Fact Family?
x 5 = 25
5 x = 25
25 ÷ = 5
25 ÷ 5 = 5
* 25 5 5
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 5 5 5

19. What is this triangle’s Fact Family?
3 x 2 =
2 x 3 =
÷ 3 = 2
÷ 2 = 3 6 * 6 6 6
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 6 2 3

20. What is this triangle’s Fact Family?* 12
3 x = 12
x 3 = 12
12 ÷ 3 =
12 ÷ = 3 4 4 4
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 4 3 4

21. What is this triangle’s Fact Family?3
x 0 = 0
0 ÷ = 0 *0 3
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 3

22. What is this triangle’s Fact Family?
2 x 4 =
4 x 2 =
÷ 2 = 4
÷ 4 = 2 8 * 8 8 8
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 8 4 2

23. What is this triangle’s Fact Family?* 7
7 x = 7
x 7 = 7
7 ÷ 7 =
7 ÷ = 7 1 1 1
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 1 7 1

24. What is this triangle’s Fact Family?
x 2 = 4
2 x = 4
4 ÷ = 2
4 ÷ 2 = 2 *4 2 2
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 2 2 2

25. What is this triangle’s Fact Family?
4 x 4 =
÷ 4 = 4 16 * 16 16 16
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 16 4 4

26. What is this triangle’s Fact Family?* 20
10 x = 20
x 10 = 20
20 ÷ 10 =
20 ÷ = 10 2 2 2
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 2 10 2

27. What is this triangle’s Fact Family?
7 x 2 =
2 x 7 =
÷ 7 = 2
÷ 2 = 7 14 * 14 14 14
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 14 2 7

28. What is this triangle’s Fact Family?
6 x 2 =
2 x 6 =
÷ 6 = 2
÷ 2 = 6 12 * 12 12 12
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 12 2 6

29. What is this triangle’s Fact Family?
x 1 = 8
1 x = 8
8 ÷ = 1
8 ÷ 1 = 8 *8 8 8
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 8 8 1

30. What is this triangle’s Fact Family?
18 x = 5
x 9 = 18
18 ÷ 9 =
9 ÷ = 18 2 * 18 2 2
x,÷
Being able to recall basic number facts, such as or 8 x 8, with speed and accuracy is called fact power. Fact power is an important part of learning math, and it involves frequent practice. In addition to the games and short exercises children do in class, they also use Fact Triangles to practice and master basic number facts.
Fact Triangles are the Everyday Math version of flash cards. Because Fact Triangles are based on fact families, they help children memorize facts more effectively than flash cards. Fact families are sets of related facts that link either addition and subtraction or multiplication and division.
Here’s an example. Fact family:
6 + 3 = 9
9 - 3 = 6
Etc.
It is best to practice Fact Triangles with a partner. One person covers one corner with a finger, and the person practicing gives a number fact that has the covered number as the answer. This is a simple game that is easy for children to play at home, and Fact Triangles are often recommended in Everyday Math’s Home Links. 2 9 2

31. Great Job!