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Laabri

IM: 6.7.5: Using Negative Numbers to Make Sense of Contexts (Practice)

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Last updated over 1 year ago
19 Nsɛmmisa

Write a positive or negative number to represent each change in the high temperature.

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Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Tuesday’s high temperature was 4 degrees less than Monday’s high temperature.

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

Wednesday’s high temperature was 3.5 degrees less than Tuesday’s high temperature.

Asemmisa {{asɛmmisaAhyɛnsode}}
3.

Thursday’s high temperature was 6.5 degrees more than Wednesday’s high temperature.

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

Friday’s high temperature was 2 degrees less than Thursday’s high temperature.

Decide which of the following quantities can be represented by a positive number and which can be represented by a negative number. Give an example of a quantity with the opposite sign in the same situation.

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5.

Tyler’s puppy gained 5 pounds.

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6.

The aquarium leaked 2 gallons of water.

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7.

Andre received a gift of $10.

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8.

Kiran gave a gift of $10.

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9.

A climber descended 550 feet.

Asemmisa {{asɛmmisaAhyɛnsode}}
10.

Make up a situation where a quantity is changing.

  1. Explain what it means to have a negative change.

  2. Explain what it means to have a positive change.

  3. Give an example of each.

Refer to the number line.

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11.

On the number line, label the points that are 4 units away from 0.

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12.

If you fold the number line so that a vertical crease goes through 0, the points you label would match up. Explain why this happens.

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13.

On the number line, label the points that are \frac{5}{2} units from 0. What is the distance between these points?

Evaluate each expression.

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14.

2^{3} \sdot 3

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15.

\frac{4^2}{2}

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16.

3^1

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17.

6^2 \div 4

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18.

2^{3} - 2

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19.

10^{2} + 5^{2}