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Laabri

Topic 1 Test-Rational Number Operations Test

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Last updated almost 4 years ago
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Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Will the sign of the product of two negative numbers be negative or positive? Explain your answer.

Suppose a deep sea diver dives from the surface to

85

feet below the surface. He then dives down

13

more feet. The​ diver's depth is represented by the sum

−85+​(−13​).

Find and interpret the sum to describe the​ diver's present depth.

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

Find the sum.

Asemmisa {{asɛmmisaAhyɛnsode}}
3.

What is the​ diver's present​ depth?

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

Match the situation in Column A with its addition expression in Column B.

Draggable itemarrow_right_altCorresponding Item

The temperature drops 12 degrees then rises 12 degrees.

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A fish swims 12 feet below sea level and then another 12ft deeper to avoid a shark.

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Pat takes 12 steps forward and then 12 steps back.

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Asemmisa {{asɛmmisaAhyɛnsode}}
5.

Walking Mario walks 7 blocks east from his home and arrives at his favorite restaurant. When he​ arrives, he discovers that he dropped his wallet along the way. He retraces his steps for 5 blocks until he finds his wallet. An expression for how many blocks east Mario is from his home after finding his wallet is the sum

7+​(−​5).

How many blocks east is Mario from his home after finding his​ wallet?

Asemmisa {{asɛmmisaAhyɛnsode}}
6.

Find

−7−​(−6​).

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

The temperature at the beginning of the day was −4°C. The temperature dropped 5°C

by the end of the day. What was the temperature at the end of the​ day? Use the number line model to find −4−5.

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8.

Find the sum.

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9.

Write the integer that represents the situation. The temperature was11°F. It dropped so that the temperature was 0°F.​ °F was the change in temperature.

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10.

Four out of nine dogs weigh less than 20 pounds. What is the decimal equivalent for the number of dogs weighing less than 20 pounds?

Asemmisa {{asɛmmisaAhyɛnsode}}
11.

Question is on the background.

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12.

Javier had $305 in his bank account. His bank charges a fee of $7.50 each month that a balance is below $500. If he makes no other deposits or withdrawals, how much money is in Javier’s account at the end of three months?

Asemmisa {{asɛmmisaAhyɛnsode}}
13.

A fish finder shows a large fish at 13 feet below the surface of the water and a smaller fish located 4 feet below the surface of the water. Select all the expressions that are equivalent to the distance between the fish.

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14.

A catering company loses $110 as a result of a delay. The 5 owners of the company must share the loss equally. Which quotient represents each owner's share of the loss?

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15.

Carl and Cameron are at a pool. Carl dives in and touches the bottom of the pool, 15 feet below the surface of the water. Cameron is standing on a diving platform 2 feet above the surface, waiting for his turn. What is the vertical distance between Carl’s hand and Cameron’s feet?

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16.

What is 27+(−3)+(−20)?

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17.

The high temperatures in Weston for 7 consecutive days were −14°C, −10° C, −3°C, 6°C, 8°C, −4°C, and −11°C. What was the average high temperature for the 7 days?

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18.

Find the product of

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19.