Common Multiples and Factors

Select the Common MULTIPLE of 9 and 6:

• 18

• 13

• 15

Select a Common FACTOR of 6 and 9:

• 3

• 6

• 9

Answer explanation

Factors are whole numbers that can be multiplied together to produce another whole number.

3x3=6

3x3=9

Select the Common FACTORS of 12

and 30:

• 2, 3, 4, 6

• 1, 6, 8,12

Answer explanation

Factors are whole numbers that can be multiplied together to produce another whole number.

2x6=12

3x4=12

Select the Common FACTOR for 14 and 21:

• 2

• 7

• 3

Answer explanation

Factors are whole numbers that can be multiplied together to produce another whole number.

7x2=14

7x3=21

Select the Common MULTIPLES for 7 and 3:

• 14

• 21

• 42

Answer explanation

Multiples are what we get after multiplying a number by a whole number.

7x3=21

Select the Common MULTIPLE of 9 and 4:

• 21

• 72

• 48

Answer explanation

Multiples are what we get after multiplying the number by an integer (not a fraction).

9x8=72

4x18=72

Select ALL the Common FACTORS of 16 and 40:

• 2

• 4

• 9

Select the Common MULTIPLES of 3 and 12:

• 21

• 43

• 36

Select the Common FACTOR of 22 and 66.

• 7

• 11

• 13

• 19

Select the Common MULTIPLE of 5 and 15:

• 10

• 30

• 50

Answer explanation

Multiples are what we get after multiplying the number by another whole number.

5x6=30

15x2=30.