Review of integer and rational number operations

If you combine two additive inverses(opposites), the sum will always be _____.

• zero

• one

• positive

• negative

Multiply.

• 3/40

• 4/40

• 3/5

• 5/24

-1 - 6 =

• 7

• -7

• 5

• -5

Angelo has $5.50 for lunch. He buys a cookie for $1.05 and a drink for 1.45. How much money does Angelo have left?

• $2.50

• $3.00

• $1.25

• $4.00

9 + (-5) =

• 14

• 4

• -4

• 5

Joe went scuba diving. He descended down to 5 feet below sea level, stopped, then went down another 20 feet. What is Joe's level?

• 25 feet

• -15 feet

• 15 feet

• -25 feet

Find the sum.

 $0.74\ +\ \left(-\frac{3}{5}\right)$  

• 0.25

• 0.14

• 0.5

• 0.75

On a cold winter morning, the temperature was -5 degrees F. By noon, the temperature increased 5 degrees. What was the temperature by noon?

• $0\degree\ F$

• $1\degree F$
  

• $-10\degree F$

• $10\degree F$

A negative number times a positive number will give you _____.

• zero

• its additive inverse

• a positive number

• a negative number

Which of the following quotients is equal to -4?

• 16 $\div$ 4

• -16 $\div$ -4

• -32 $\div$ 8

• -25 $\div$ 5