Factor Pairs
True or False:
2 x 9 = 9 x 2
True!
Is this number prime or composite?
9
Composite
1,3,9
List all the factors of this number.
6
1,2,3,6
Mrs. Amanto bought 5 new Polo shirts. Mrs. Adams bought 3 times as many shirts. How many shirts did Mrs. Adams buy?
20 shirts
22 divided by 2 equals?
What are the factor pairs of 12?
1 x 12
2 x 6
3 x 4
Is this number prime or composite?
2
Prime
1,2
List all the factors of this number.
16
1,2,4,8,16
Becky biked 6 miles on Friday. On Saturday, he biked 4 times farther. How far did Becky bike on Saturday?
24 miles
45 divided by 5
9
Find the missing factor in the pair: (__, 6) where the product is 30
5 because
6 x ? = 30
or
30 / 6 = ?
Is this number prime or composite?
85
Composite
Any number ending in 5 or 0 is a multiple of 5.
List all the factors of this number.
21
1,3,7,21
Mountain-creek 4th graders solved 7 tough math questions. Charolette 4th graders solved 3 times as many tough math questions. How many tough math questions did Charlotte 4th graders solve?
21 tough math questions
? divided by 3 = 7
21
How many factor pairs does a prime number have?
Only 2!
Is this number prime or composite?
77
Composite
List all the factors of this number.
28
1,2,4,7,14,28
Mr. Hathaway bought awards for students. Last year, he bought 9 awards. This year, he bought 8 times as many awards. How many awards did Mr. Hathaway buy?
72 awards
81 divided by 9
9
Which of the following is a factor pair of 18: (2, 9), (3, 6), (4, 5), or (2,8)?
(2,9)
(3,6)
Is this number prime or composite?
31
Prime
List all the factors of this number.
32
1,2,4,8,16,32
The 3rd grade teachers brought in 12 donuts. The 4th grade teacher brought in 8 times the amount of donuts. How many donuts did the 4th grade teacher bring in?
96 donuts
51 divided by ? = 17
3