Unit 2 Test Review

Multiplication Comparisons

100

9 times as many as 10 = ?

90

200

Write an equation with numbers and symbols that represents this statement:  4 times as many as 9 is 36.

4 x 9 = 36

300

Complete this phrase:  48 is ____ times as many as 6.

48 is 8 times as many as 6

400

Mrs. Stanek's flower grew to be 12 inches tall. Ms. Skiba's flower grew to be 3 times as many inches tall. How many inches tall is Ms. Skiba's flower? DRAW A BAR DIAGRAM TO SOLVE.

Ms. Skiba's flower is 36 inches tall because 3 times as many as 12 is 36 (3 x 12 = 36)

500

Gregory created 5 times as many valentines as Adam. Gregory created 15 valentines total. How many valentines did Adam create? How many did they create altogether? DRAW A BAR DIAGRAM TO SOLVE!

Adam created 3 valentines because 15 divided by 5 is 3. Altogether they created 18 valentines. (15 + 3= 18)

Factors

100

Is 6 a factor of 66? Explain why or why not.

Yes! Because 6 x 11 = 66

200

List the factors or factor pairs of 12

1, 12, 2, 6, 3, 4

300

Which of these is NOT a factor of 48:  1    48     12    4    6   10   8

10

400

Is 7 a factor of 56? Explain why or why not.

Yes, because 7 x 8 = 56.

500

List the factors of 32. (Must have at least 4 factors to earn points)

1, 32, 2, 16, 4, 8

Multiples

100

Is 9 a multiple of 3? Explain.

Yes! Because 3 x 3 = 9 (3, 6, 9...)

200

What is the 4th multiple of 6?

24 because 4x6= 24. (6, 12, 18, 24)

300

List the first 10 multiples of 8.

8, 16, 24, 32, 40, 48, 56, 64, 72, 80

400

Whitney says that all multiples of 5 have a 5 in the ones place. Is she correct? Explain why or why not.

No, she is not correct. Some multiples of 5 have a 0 in the ones place: 5, 10, 15, 20, 25, 30...

500

Which is NOT a multiple of 9:   9,   27,   45,   39,   18

39

Prime/Composite

100

Is 41 prime or composite? Prove it.

Prove it- 1 x 41

200

Is 21 prime or composite? Prove it.

Composite- 1 x 21,  3 x 7

300

Is 18 prime or composite? Prove it

Composite- 1 x 18,  2 x 9,   3 x 6

400

Anthony claims that all odd numbers are prime. Is he correct? Explain why or why not.

No he is not correct. For example, 15 is odd, but it is also composite. It has more than 2 factors (1x15 and 3x5)

500

Danielle says that 2 is composite because it is an even number. Is she correct? Explain why or why not.

No, she is not correct. 2 is prime because it only has two factors- 2 and 1.

Mix-Up

100

What is Mrs. Stanek's first name?

Natalie

200

Would you rather have 3 times as many as 8 cookies or 2 times as many as 10 cookies?

3 times as many as 8 because 24 cookies is more than 20.

300

Write in expanded form-  4,778

4,000 + 700 + 70 + 8

400

What is the difference? 8,006 - 3,125

4,881

500

What is the sum of 15,668 and 43,001?

58,669