Pre-Transition Chapter 7 Review

Short division

100

48 ÷ 7 

6 R6 

200

There are 57 children who want to play basketball. If they divide into teams of 5, how many teams can they make, and how many children will be left over? 

11 teams, 2 children left over

300

5,674 ÷ 3 

1,891 R1 

400

16,001 ÷ 7 

2,285 R6 

500

22,140 ÷ 4 

5,535 no remainder

Prime numbers and Factorization

100

What is the prime factorization of 500?

2² x 5³

200

What is the prime factorization of 72?

2³ x 3²

300

2³ x 3² x 5 is the prime factorization of what number?

360

400

is 53 a prime or composite number? Why?

a prime number because it is only divisible by 1 and itself

500

is 78 a prime or composite number?

Composite because it is divisible by 1, 2, 3, 6, 13, 26, 39, and 78

Short Div to Mixed Numbers

100

78 ÷ 3

26  1/3 

200

137 ÷ 4

34  1/4 

300

8,001 ÷ 2 

4,000  1/2 

400

9,876 ÷ 7 

1,410  6/7 

500

9,875 ÷ 6 

1,645  5/6 

Dividing Decimals

100

7.5 ÷ 0.5

15

200

24.6 ÷ 0.015 

1,640 

300

If a six-pack of soda costs $2.58, what is the cost per can? 

$0.43 per can

400

3.8 ÷ 0.8

4.75

500

1,345.83 ÷ 0.96 

1401.91 

Dividing Positives and Negatives

100

6 ÷ –6 

-1

200

–80 ÷ –8 

10

300

will the answer be positive or negative?

-85 ÷ 5

negative

400

54 ÷ –3 

-18

500

will the answer be positive or negative?

-150 ÷ –25

positive