Grade 4 Module 3

Prime and Composite Numbers

100

List all prime numbers below 13

1, 2, 3, 5, 7, 11

200

Is 21 a composite or prime number?

composite:

3 x 7 = 21

300

List all the factors (count-bys) of 16

1, 2, 4, 8

1 x 16, 2 x 8, 4 x 4

400

Find the greatest multiple of 7 that is less than 45

42 (6 groups of 7)

500

Find all of the factors that create a product of 36.

1 x 36, 2 x 18, 3 x 12, 4 x 9, 6 x 6

Long Division

100

270 divided by 3

27 / 3 = 9

270/3 = 90

200

684 divided by 6

114

300

656 divided by 9

72 R 8

400

1657 divided by 8

207 R 1

500

11,564 divided by 7

1,652

2 digit Multiplication

100

26 x 6

156

200

78 x 80

78 x 8 = 624

78 x 80 = 6,240

300

14 x 41

574

400

66 x 77

5,082

500

187 x 23

4,301