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Year 9 Integers (Directed Numbers) Worksheet — Level 2 — Practice Set 3 — Answers

Answer sheet with worked solutions for the Year 9 integers worksheet.

Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · Integers

Year 9 Integers (Directed Numbers) Worksheet — Level 2 — Practice Set 3 — Answers

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

1.(−18) − 7 = (answer space)

Answer: −25

Move 7 to the left on the number line.

2.16 × 3 = (answer space)

Answer: 48

Same signs give a positive product.

3.1 × (−9) = (answer space)

Answer: −9

Different signs give a negative product.

4.11 + (−8) = (answer space)

Answer: 3

Adding a negative is the same as subtracting: 11 − 8 = 3

5.20 ÷ 4 = (answer space)

Answer: 5

Same signs give a positive quotient.

6.18 × 9 = (answer space)

Answer: 162

Same signs give a positive product.

7.(−22) ÷ 11 = (answer space)

Answer: −2

Different signs give a negative quotient.

8.(−17) + 10 = (answer space)

Answer: −7

Move 10 to the right on the number line.

9.(−16) + (−3) = (answer space)

Answer: −19

Adding a negative is the same as subtracting: -16 − 3 = -19

10.10 − (−18) = (answer space)

Answer: 28

Subtracting a negative is the same as adding: 10 + 18 = 28

11.3 − (−2) = (answer space)

Answer: 5

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

12.10 − 17 = (answer space)

Answer: −7

Move 17 to the left on the number line.

13.3 − 11 = (answer space)

Answer: −8

Move 11 to the left on the number line.

14.(−5) − (−19) = (answer space)

Answer: 14

Subtracting a negative is the same as adding: -5 + 19 = 14

15.18 × 17 = (answer space)

Answer: 306

Same signs give a positive product.

16.9 ÷ (−9) = (answer space)

Answer: −1

Different signs give a negative quotient.

17.4 ÷ (−1) = (answer space)

Answer: −4

Different signs give a negative quotient.

18.7 ÷ (−7) = (answer space)

Answer: −1

Different signs give a negative quotient.

19.(−1) + (−18) = (answer space)

Answer: −19

Adding a negative is the same as subtracting: -1 − 18 = -19

20.(−4) × (−15) = (answer space)

Answer: 60

Same signs give a positive product.

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