Factors and Factor Pairs
Multiples
Prime and Composite Numbers
Area
Multiplication
Facts
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. Vancelette 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. Vancelette wants her rectangle to be.
400
Cookies come in packages of 4 and 6. Ms. Vancelette needs 20 cookies for her class. Which packages of cookies should you choose for Ms. Vancelette's class? She does not want to have any extra. Show or explain your reasoning.
Ms. Vancelette 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