1. Place the following numbers on a number line.
0, 0.5, 0.8, 0.2, 1, 1 5 , 4 5 , 1 2
Video Link

2. Place the numbers in order from least to greatest.
-20, -25, -29, -21, -30
-30, -29, -25, -21, -20
Video Link

3. Timothy is 48 1 2 inches tall. Tabitha is 48 1 8 inches tall
Timothy is inches tall. Tabitha is inches tall. Write an inequality comparing the height of the children.
>48 1 8
Video Link

4. Write 250 as the product of its primes.75
5 5
3 × 5 2
Remember that you are trying to find all of the prime numbers “hiding” inside of the given number.
Video Link 1
(Identifying Prime Numbers)
Video Link 2
(Prime Factorization)

5. List all of the factors of 32.
1 × 32
2 × 16
4 × 8
1, 2, 4, 8, 16 & 32
I generally begin by making a list of all of the multiplication tables for the given number.
Video Link

6. Express the sum of each pair of numbers as a product of the greatest common factor of the numbers and another sum.
Find the GCF of the numbers in the sum
Divide each number in the sum by the GCF
42 ÷ 21 = 2
105 ÷ 21 = 5
Rewrite the sum as a multiplication table of the GCF and what is left of the sum
21 (2 + 5)
Step 1 42
1 × 42
2 × 21
6 × 7
105
1 × × 35
5 × 21
7 × 15
Step 2
Step 3
Video Link
(This is a little more advanced because it is factoring with a variable but the overall concept is the same )

7. 19 baseball cards Video Link
Jesse had a box containing between 10 and 20 baseball cards. If he counts them out two at a time, he has one left over. If he counts them out five at a time, he has four left over. How many baseball cards does Jesse have in the box?
19 baseball cards
Video Link

8. They will meet again in 180 seconds which will be at 6:03pm.
On a track for remote-controlled racing cars, racing car A completes the track in 36 seconds, while racing car B completes it in 45 seconds. If they both start at the same time, after how many seconds will they be side by side again? If they began racing at 6pm, what time will it be when they are side by side again?
They will meet again in 180 seconds which will be at 6:03pm.
36 Seconds
45 Seconds 36 45 72 90
108
135
144
180
LCM
1 minute = 60 seconds
180 seconds = 3 minutes
Video Link

9. Perimeter = side + side + side + side
The area of a square is 81 square inches. Find the perimeter of the square.
36 inches
SIDE
Area = side × side
81 = ? × ?
81 = 9 × 9
So each side is 9 inches long
SIDE
Area = 81 in. 2
SIDE
Perimeter = side + side + side + side
Perimeter =
Perimeter = 36 inches
SIDE
Video Link Video Link 2
(Area & Perimeter of a Square) (Perfect Square Song)

10. There are 36 apples, 28 oranges, and 24 pears in a basket
There are 36 apples, 28 oranges, and 24 pears in a basket. The fruits are packed into bags. An equal number of each kind of fruit is packed into each bag. What is the greatest number of bags of fruit that could be packed?
4 bags of fruit
GCF
36 apples
1 × 36
2 × 18
3 × 12
4 × 9
6 × 6
28 oranges
1 × 28
2 × 14
4 × 7
24 pears
1 × 24
2 × 12
3 × 8
4 × 6
Video Link
(This is the same video as slide 8 because it covered both LCM and GCF)

11. 