Factors and Multiples

Factors

100

What are the factors of 25?

1, 5, 15

200

What are the factors of 32?

1, 2, 4, 8, 16, 32

300

What are the factors of 47?

1, 47

400

Is 6 a factor of 96?

Yes, 16 x 6 = 98

500

Is 7 a factor of 98?

Yes, 14 x 7 = 98

Multiples

100

What are the first 5 multiples of 4?

4, 8, 12, 16, 20

200

What are the first 5 multiples of 7?

7, 14, 21, 28, 35

300

What are the first 5 multiples of 13?

13, 26, 39, 52, 65

400

Is 126 a multiple of 3?

Yes

500

Is 654 a multiple of 6?

Yes

Arrays

100

What are all possible arrays of 7?

1 x 7 and 7 x 1

200

What are all possible arrays of 21?

1 x 21, 21 x 1, 7 x 3, 3 x 7

300

True of False: These are all the possible arrays for 36.

1 x 36, 36 x 1, 2 x 18, 18 x 2, 3 x 12, 6 x 6, 

False, 12 x 3 is missing

400

True or False: 

3 x 21 is a possible array for 63.

True

500

True or False: These are all the possible arrays for 41

1 x 41, 41 x 1, 3 x 17, 17 x 3

False, 3 x 17 x 17 and 3 are not arrays of 41

Prime or Composite

100

11

Prime

200

15

composite 

300

33

composite

400

1

neither

500

79

prime

Potpourri

100

True or False: 

A composite number has at least 4 factors.

False, a composite number has at least 3 factors.

200

True or False: 

All even numbers greater than 2 are prime.

True

300

Which of these are a factor pair of 42?

3 x 14, 21 x 3, 7 x 8

3 x 14

400

Are all of these numbers multiples of 11?

99, 111, 121

No, 111 is not a multiple of 11.

500

The dividend is a multiple of 2. The divisor is a factor of 12. The quotient is a factor of 24.

Dividend ÷ Divisor = Quotient 

2 ÷ 2 = 1, 12 ÷ 2 = 6, 12 ÷ 4 = 3, etc.