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

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

1.(−8) × (−15) = (answer space)

Answer: 120

Same signs give a positive product.

2.(−6) × (−10) = (answer space)

Answer: 60

Same signs give a positive product.

3.8 + (−12) = (answer space)

Answer: −4

Adding a negative is the same as subtracting: 8 − 12 = -4

4.8 − 7 = (answer space)

Answer: 1

Move 7 to the left on the number line.

5.16 ÷ (−8) = (answer space)

Answer: −2

Different signs give a negative quotient.

6.2 + 9 = (answer space)

Answer: 11

Move 9 to the right on the number line.

7.(−17) − 19 = (answer space)

Answer: −36

Move 19 to the left on the number line.

8.5 × 3 = (answer space)

Answer: 15

Same signs give a positive product.

9.(−45) ÷ 15 = (answer space)

Answer: −3

Different signs give a negative quotient.

10.(−9) + (−7) = (answer space)

Answer: −16

Adding a negative is the same as subtracting: -9 − 7 = -16

11.(−17) − (−11) = (answer space)

Answer: −6

Subtracting a negative is the same as adding: -17 + 11 = -6

12.2 × 12 = (answer space)

Answer: 24

Same signs give a positive product.

13.8 ÷ 2 = (answer space)

Answer: 4

Same signs give a positive quotient.

14.17 × 1 = (answer space)

Answer: 17

Same signs give a positive product.

15.3 + 15 = (answer space)

Answer: 18

Move 15 to the right on the number line.

16.(−17) + 14 = (answer space)

Answer: −3

Move 14 to the right on the number line.

17.(−16) + (−8) = (answer space)

Answer: −24

Adding a negative is the same as subtracting: -16 − 8 = -24

18.66 ÷ (−11) = (answer space)

Answer: −6

Different signs give a negative quotient.

19.8 × 10 = (answer space)

Answer: 80

Same signs give a positive product.

20.17 + 16 = (answer space)

Answer: 33

Move 16 to the right on the number line.

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