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Year 8 Integers (Directed Numbers) Worksheet — Level 2 — Practice Set 4 — Answers

Answer sheet with worked solutions for the Year 8 integers worksheet.

Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Integers

Year 8 Integers (Directed Numbers) Worksheet — Level 2 — Practice Set 4 — Answers

Remember the sign rules. Use a number line if it helps.

1.19 × (−5) = (answer space)

Answer: −95

Different signs give a negative product.

2.3 + 7 = (answer space)

Answer: 10

Move 7 to the right on the number line.

3.13 − (−8) = (answer space)

Answer: 21

Subtracting a negative is the same as adding: 13 + 8 = 21

4.(−12) + (−15) = (answer space)

Answer: −27

Adding a negative is the same as subtracting: -12 − 15 = -27

5.(−14) × (−1) = (answer space)

Answer: 14

Same signs give a positive product.

6.(−4) ÷ (−2) = (answer space)

Answer: 2

Same signs give a positive quotient.

7.7 + (−1) = (answer space)

Answer: 6

Adding a negative is the same as subtracting: 7 − 1 = 6

8.19 + (−17) = (answer space)

Answer: 2

Adding a negative is the same as subtracting: 19 − 17 = 2

9.15 × 18 = (answer space)

Answer: 270

Same signs give a positive product.

10.9 − (−19) = (answer space)

Answer: 28

Subtracting a negative is the same as adding: 9 + 19 = 28

11.(−20) × 16 = (answer space)

Answer: −320

Different signs give a negative product.

12.(−18) − (−4) = (answer space)

Answer: −14

Subtracting a negative is the same as adding: -18 + 4 = -14

13.(−16) + 4 = (answer space)

Answer: −12

Move 4 to the right on the number line.

14.(−9) − 6 = (answer space)

Answer: −15

Move 6 to the left on the number line.

15.12 + (−10) = (answer space)

Answer: 2

Adding a negative is the same as subtracting: 12 − 10 = 2

16.2 − (−3) = (answer space)

Answer: 5

Subtracting a negative is the same as adding: 2 + 3 = 5

17.(−8) + 17 = (answer space)

Answer: 9

Move 17 to the right on the number line.

18.7 + (−15) = (answer space)

Answer: −8

Adding a negative is the same as subtracting: 7 − 15 = -8

19.(−20) ÷ (−10) = (answer space)

Answer: 2

Same signs give a positive quotient.

20.3 × 18 = (answer space)

Answer: 54

Same signs give a positive product.

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