Multiplication and Long Division Review

Two digit factors Multiplication

100

79 x 20

1580

200

43 x 62

2666

300

74 x 37

2738

400

79 x 15

1185

500

846 x 27

22842

Long Division

100

121 divided by 2

2 R1

200

654 divided by 3

218

300

1462 divided by 4

365 R2

400

6547 divided by 6

1309 R4

500

8746 divided by 5

1749 R2

Multiplication

100

24 x 7

168

200

87 x 3

261

300

543 x 8

4,344

400

217 x 9

1953

500

18643 x 7

130501

Factors and Multiples

100

All of the factors of 6

1, 2, 3, and 6

200

All the factors of 24

1, 2, 3, 4, 6, 8, 12, and 24

300

List the multiples of 3 up to 25

3, 6, 9, 12, 15, 18, 21, and 24

400

List the multiples of 6 to 58.

6, 12, 18, 24, 30, 36, 42, 48, 54

500

List the odd multiples of 6 up to 40.

There are none.

Prime/Composite

100

Which is a prime number?

A. 20 

B. 15 

C. 10 

D. 5

D.5

200

This number is composite. 

A. 4 

B. 5 

C. 11

 D. 17

A. 4

300

Is 66 prime or composite? Explain how you know.

Composite: 66 is an even number.

400

Is 123 prime or composite?

Composite: divisible by 3.

41 x 3= 123

500

List the prime numbers up to 50.

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, and 47