*7th Grade Rational Number Review*

Integer Review

100

What is the additive inverse of -68?

68

200

What is the opposite of 40?

-40

300

A negative number divided by a positive number will always be:

Negative

400

Fill in the blank.

-20 + ______ = -50

-30

500

Explain the rule for multiplying rational numbers.

Same sign = positive product

Different sign = negative product

Rational Number Addition

100

(2.3) + (-2.3)

0

200

(0.20) + (0.30)

0.50

300

15.50 + (-16.50)

1

400

(-0.20) + (-0.20)

-0.40

500

Fill in the rules: A positive number plus a positive number = _____________ A negative number plus a negative number = ____________ A positive number minus a negative number = ___________

What is a positive number, a negative number, and a positive number?

Rational Number Subtraction

100

(-15) - (22)

(-37)

200

(64) - (-14)

 78

300

(1/4) - (-3/8)

5/8

400

At 10:00 pm, the temperature was 5 degrees. Two hours later, at midnight, the temperature was -2 degrees. How many degrees did the temperature change?

 7 degrees

500

(-2) - (-2) - 2

-2

Rational Number Multiplication/Division

100

(-2)(4)

(-8)

200

(-2.2)(-3)

 6.6

300

-100 ÷ (-4)

25

400

-3/4 ÷ 1/8

-6

500

The temperature drops by -8 degrees every hour during a cold front. How much will the temperature drop in 3 hours?

-24 degrees 

Mixed Review

100

Denise deposited $200 in her checking account. Then she wrote a check for $167.19. What is her account balance? 

$32.81

200

The temperature is –4°C and rises 6 degrees. What is the new temperature?

2 degrees 

300

A submarine is at –18 meters and rises 7 meters. Write and solve an equation.

-18 + 7 = -11 degrees 

400

(-4.37)(-5.2)

22.724

500

A student opens a bank account with a balance of $12.50.

Over the next few days, the following five transactions occur:

1. A deposit of $8.00

2. A withdrawal of $15.75

3. A deposit of $4.50

4. A withdrawal of $6.25

5. A deposit of $3.00

a. What is the final balance in the account?

$6.00