Unit 2b

Factors

100

List the factors of 12.

1, 2, 3, 4, 6, 12

200

List the factors of 26.

1, 2, 13, 26

300

List the factors of 24. 

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

400

List the factors of 19.

1, 19

500

List the factors of 40.

1, 2, 4, 5, 8, 10, 20, 40

Multiples

100

List the first five muliples of 3.

3, 6, 9, 12, 15

200

List the first five muliples of 4.

4, 8, 12, 16, 20

300

Is 22 a multiple of 2?

Yes

400

Is 40 a multiple of 8?

Yes

500

Is 29 a multiple of 3?

No

Division

100

3,200÷8

400

200

55÷3

18 R1

300

470÷6

78 R2

400

4,793÷5

958 R3

500

3,668÷6

611 R2

Multplicative Comparison

100

Mrs. Riege has 24 pencils and 6 erasers. How many times as many pencils as erasers does Mrs. Riege have?

4 times as many

200

True or False: 246 is 6 times as many as 41. 

True

300

Mable has 32 rocks. She has 4 times as many rocks as her brother. How many rocks does her brother have?

8 rocks

400

Jessica has 7 times as many paint brushes as Mike. Mike has 14 paint brushes. How many paint brushes does Jessica have?

98

500

David collected 617 cards. Sam collected 3 times as many cards as David. How many cards did Sam collect?

1,851

Mixer!

100

True or False: 25 is a prime number.

False

200

Write 3 multiples and 3 factors of 24.

Factors: 1,2,3,4,6,8,12,24

Multiples: 24, 48, 72

300

What is the ONLY even prime number?

2

400

Three friends ordered 2 pizzas. Each pizza was cut into 8 slices. If each friend ate the same number of slices, how many slices did each friend eat?

5 slices

500

True or False: All odd numbers are prime.

False