Show:
Factors and Factor Pairs
Multiples
Prime and Composite Numbers
Area
Multiplication

Facts
100

List the factor pairs of the number 20

20 x 1 

10 x 2

5 x 4

100

List the first 5 multiples of the number 2

2, 4, 6, 8, 10, 

100

True or False- 17 is a prime number. Explain your reasoning.

True- 17 only has one factor pair which means it is prime (1x17)

100

Find the area of this rectangle 

15

100

4 x 5

4 x 8

20 

32

200

Find all of the factor pairs for each number. 

13

16

24

13----- 13 x 1

16----- 16 x 1,  2 x 8 , 4 x 4

24------24 x 1, 2 x 12, 3 x 8, 4 x 6

200

Select ALL the numbers that are multiples of 8. 

A) 66

B) 16 

C) 40 

D) 74

B and C --

8 x 2= 16

8 x 5= 40

200

True or false - 21 is a composite number. Show or explain your reasoning. 

True- 21 is a composite number because 21 has more than 1 factor pair:

21 x 1 

7 x 3


200

Draw a rectangle whose area is represented by the following expression:

5 x 5

Area= 25 square units 

200

6 x 5

6 x 7

30

42

300

List all of the factors of 40 

1, 2, 4, 5, 8, 20, 40

300

List all of the multiples of 3 from 1-30 

3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 

300

True or false - 32 is a prime number 

False- 32 has more than 1 factor pair which means it is composite: 

32 x 1 

8 x 4 

16 x 2

300

Draw 3 rectangles that have the area of 12

1 x 12 

2 x 6 

3 x 4 

300

9 x 4

9 x 8

36

72

400

Ms. Lafortune wants to build a rectangle with an area of 50 square units using square tiles. Can she build a rectangle with a width of 10 units? Show or explain your reasoning. 

Yes she can but only if the length of the rectangle is 5 because 10 x 5 = 50 which is the area that Ms. Lafortune wants her rectangle to be. 

400

Cookies come in packages of 4 and 6. Ms. Lafortune needs 20 cookies for her class. Which packages of cookies should you choose for Ms. Lafortune's class? She does not want to have any extra. Show or explain your reasoning. 

Ms. Lafortune should buy 5 packages of 4 cookies because that would give her exactly 20 cookies. 


If she bought the packages of 6, she would either have too many or too little because 20 is not a multiple of 6. 

400

List all of the factor pairs of 26. Is 26 prime or composite?

1 x 26

13 x 2 

COMPOSITE 

400

A rectangle has an area of 36 square units. List all of the possible rectangle that can be formed with an area of 36. 

1 x 36 

2 x 18 

9 x 4 



400

12 x 10

12 x 6

120

72