Review for Unit 2 Test Multiplication and Division of Signed Rational Numbers

Question 1

A submarine descends 720 feet in 6 minutes. Find the submarine’s change in height per minute.

Accepted Answer

-120 ft

Question 2

The price of a stock falls $2.25 each day. How much did it fall after 12 days?

Accepted Answer

$27

Question 3

What is the decimal equivalent of \frac{-1}{8}

Accepted Answer

-0.125

Question 4

The temperature falls 3 degrees each hour. Which multiplication expression matches the temperature it was 2 hours ago?

Accepted Answer

-3\left(-2\right)

Question 5

What is the decimal equivalent to \frac{3}{11}?

Accepted Answer

0.\overline{27}

Question 6

What is Dr. Polak&#x27;s favorite grocery store in/close to town?

Accepted Answer

Nature&#x27;s Temptations

Question 7

Find the change in height per minute of a hiker who descended 320 feet in 40 minutes.

Accepted Answer

-8 ft

Question 8

You measure the height of the tide using the support beams of a pier. What is the mean hourly change in the height?

Accepted Answer

-8.5 inches per hour

Question 9

Solve this complex fraction

Accepted Answer

\frac{3}{14}

Question 10

What is the decimal equivalent of \frac{5}{9}?

Accepted Answer

0.\overline{5}

Question 11

What is a terminating decimal?

Accepted Answer

A decimal that ends because the remainder is eventually 0.

Question 12

Find the next two numbers in the pattern: -128, 64, -32, 16, ...

Accepted Answer

-8, 4

Question 13

Bob says that -56(-7) is equal to 8. Is Bob correct?

Accepted Answer

No

Question 14

A helicopter’s altitude is changing at a rate of -17 feet per second. What is the altitude after 4 seconds?

Accepted Answer

-68

Question 15

What was the constant operational change in: Find the next two numbers in the pattern: -128, 64, -32, 16, ...

Accepted Answer

Divide by -2

Question 16

A negative value divided by a negative value is a negative value.

Accepted Answer

False

Question 17

The temperature falls 3 degrees each hour. Which multiplication expression matches how much it drops after 5 hours?

Accepted Answer

-3	imes5

Questions 17