Factors and Multiples

Multiples

100

First 5 multiples of 2

2, 4, 6, 8, 10

200

First 5 multiples of 3

3, 6 , 9, 12, 15

300

First 5 multiples of 6

6, 12, 18, 24, 30

400

First 5 multiples of 7

7, 14, 21, 28, 35

500

First 5 multiples of 8

8, 16, 24, 32, 40

Factors pairs

100

Name two factor pairs of 8

1, 8

2, 4

200

Name at least two factor pairs of 16

1, 16

2, 8

4, 4 

300

Name two factor pairs of 20 besides 1 and 20.

2, 10

5, 4

400

Name two factor pairs of 18 besides 1 and 18. 

2, 9

3, 6

500

Name two factor pairs of 24 besides 1 and 24.

2, 12

3, 8

4, 6

What is my product?

100

4 x 2=

8

200

6 x 3=

18

300

7 x 6=

42

400

8 x 8=

64

500

9 x 7=

63

Are you a factor?

100

Is 5 a factor of 243?

No (because it doesn't end with a 0 or 5)

200

Is 2 a factor of 540?

Yes (because it ends in an even number 0, 2, 4, 6, 8)

300

Is 11 a factor of 55?

Yes (because 11 x 5=55)

400

Is 3 a factor of 32?

No (because 3+2=5 , not 3, 6, or 9 when added together)

500

Is 3 a factor of 72?

Yes (because 7+2=9, which is 3, 6, or 9)

Prime/Composite

100

Is 12, prime or composite?

composite (because it is an even number (1x12, 2x6, 4x3)

200

Is 5 prime or composite?

Prime (because its only factor pair is 1 and 5)

300

Is 17 prime or composite?

Prime (only factors are 1 x 17)

400

True or False: All odd numbers are Prime

False (example: 9 is an odd number but has multiple factor pairs 1x9, 3x3)

500

Which two numbers are neither prime or composite

0 and 1