3.2 The Integers

Negative numbers on the number line, ordering and absolute value, and the sign rules for adding, subtracting, multiplying, and dividing them.

Contemporary Mathematics, 3.2 The Integers

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13 exercises

3.2 Exercise 9

Determine which of 27 and 410 is larger, and express that using both the greater than and the less than notations.

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3.2 Exercise 11

Calculate |19|.

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3.2 Exercise 13

Calculate |−435|.

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3.2 Exercise 15

Use your calculator to calculate 4 + (−7). Explain how the answer agrees with what was expected.

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3.2 Exercise 17

Use your calculator to calculate 18 − 9. Explain how the answer agrees with what was expected.

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3.2 Exercise 19

Use your calculator to calculate 27 − (−13). Explain how the answer agrees with what was expected.

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3.2 Exercise 21

Use your calculator to calculate (−13) + 90. Explain how the answer agrees with what was expected.

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3.2 Exercise 23

Jennifer is owed $50 from her friend Janice, but owes her friend Pat $87. What is Jennifer’s net worth?

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3.2 Exercise 25

Use your calculator to calculate 4 × 8. Explain how the answer agrees with what was expected.

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3.2 Exercise 27

Use your calculator to calculate 9 × (−10). Explain how the answer agrees with what was expected.

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3.2 Exercise 29

Use your calculator to calculate 400/(−25). Explain how the answer agrees with what was expected.

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3.2 Exercise 31

Use your calculator to calculate −750/(−3). Explain how the answer agrees with what was expected.

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3.2 Exercise 33

The daily low temperatures in Barrie, Ontario, for the week of February 14, 2021, were −20°, −12°, −15°, −23°, −17°, −13°, and −19° degrees Celsius. What was the average daily temperature for the week of February 14, 2021, in Barrie?

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