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FACT FAMILIES Miss Koch

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**Let’s Try to Get 10 Problems**

First, we are going to practice Some of our addition facts!! Let’s Try to Get 10 Problems Correct!!!

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**Now that we are warmed up, Let’s get started practicing our fact families!**

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What is a Fact Family?

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**What does the top number in a fact family represent?**

7 8

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Good Job! The Top Number In a Fact Family Represents the SUM!

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**What would the SUM for this fact family be?**

8 7

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Good Job!!! 15

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**Now that we found that the sum of 8+7=15, lets find the rest of the**

Facts in this family! 15 8 7

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**Are these the facts you have in your family?**

7+8=15 8+7=15 15-7=8 15-8=7

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**Write the facts that belong in the fact family:**

13 6 7

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**Does your fact family look like this?**

6 + 7= 13 7 + 6 = 13 13-6= 7 Good Job! 13-7= 6

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**What facts belong in this fact family?**

14 5 9

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**Do your answers look like this?**

5+9=14 9+5=14 14-5= 9 14-9=5

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**Good Job! Now, we are going to try some problems where YOU find the numbers in the fact family!**

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**Who can tell me how we are going to find the sum?**

Before we can find out the facts in this family we need to find the SUM! Who can tell me how we are going to find the sum? 8 9

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**Now that we found out that the sum of 8+9=17, write the facts that are in this fact family**

On your wipe off board! 8 + 9 = 17 9 8

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**Alright, Let’s see those math facts!**

8+9= 17 9+8 = 17 17-8 = 9 17-9 =8

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Let’s Try Another One! What do we need to do first? 7 9

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Terrific! The sum of 9+7= 16 Let’s See The Facts From this Family! 16 9 7

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9+7=16 7+9=16 16-9=7 16-7=9 Do your answers look like this?

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**On your wipe off board everybody write me a number sentence that has a sum of**

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**Does everybody have the same number sentence?**

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**Number sentences with 13 as the sum:**

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**Not all fact families that have the same SUM are going to have the same addends!**

4 4 2 2 3 1

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**13 Let’s create a fact family!**

Who can tell me TWO numbers that add up to 13? 13

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**Let’s try another fact family that has a SUM of 13, but has different addends!**

What are two DIFFERENT Numbers that add up to 13? 13

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**Let’s Create a fact family with a sum of 15!**

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**Let’s try a fact family that has a sum of 18**

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**LET’S PICK A NUMBER 13 14 or 15, THIS IS GOING TO BE THE SUM IN OUR FACT FAMILY.**

LET’S MAKE A FACT FAMILY TOGETHER!

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**LET’S MAKE A FACT FAMILY TOGETHER!**

LET’S PICK A NUMBER or 18 , THIS IS GOING TO BE THE SUM IN OUR FACT FAMILY. LET’S MAKE A FACT FAMILY TOGETHER!

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GREAT JOB AT PRACTICE, NOW, LETS TRY SOME PROBLEMS ON OUR OWN!

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**4 2 2 Great Job Today, Let’s Have A Quick Review!**

What does the number in the top of the triangle of a fact family represent? 4 2 2

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**If we are not given the SUM in a fact family, how do we find it?**

6 4

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**If 2 fact families have the same sum, do they always have to have the same addends?**

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**No, fact families with the same SUM do not have to have the same addends!**

4 4 2 2 3 1

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GREAT WORK TODAY! GREAT JOB!

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Multiplication Mrs. Walker 4th Grade.

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