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Year 8 Order of Operations (BODMAS) Worksheet — Level 3 — Answers

Answer sheet with worked solutions for the Year 8 order of operations worksheet.

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Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Order of Operations

Year 8 Order of Operations (BODMAS) Worksheet — Level 3 — Answers

Brackets, then Orders (indices), then Division/Multiplication (left to right), then Addition/Subtraction (left to right).

1.7 × 9 − 3 × 5

Answer: 48

  1. 7 × 9 = 63 and 3 × 5 = 15
  2. 63 − 15 = 48
2.(8 + 8)2 ÷ 16

Answer: 16

  1. Brackets: 8 + 8 = 16
  2. Index: 162 = 256
  3. 256 ÷ 16 = 16
3.9 × 9 − 5 × 2

Answer: 71

  1. 9 × 9 = 81 and 5 × 2 = 10
  2. 81 − 10 = 71
4.21 − 9 ÷ 3

Answer: 18

  1. Divide first: 9 ÷ 3 = 3
  2. 21 − 3 = 18
5.2 × 2 − 8 × 4

Answer: −28

  1. 2 × 2 = 4 and 8 × 4 = 32
  2. 4 − 32 = −28
6.8 × 3 − 5 × 5

Answer: −1

  1. 8 × 3 = 24 and 5 × 5 = 25
  2. 24 − 25 = −1
7.3 × 3 − 9 × 2

Answer: −9

  1. 3 × 3 = 9 and 9 × 2 = 18
  2. 9 − 18 = −9
8.21 − 12 ÷ 2

Answer: 15

  1. Divide first: 12 ÷ 2 = 6
  2. 21 − 6 = 15
9.7 × 9 − 7 × 4

Answer: 35

  1. 7 × 9 = 63 and 7 × 4 = 28
  2. 63 − 28 = 35
10.(4 + 8)2 ÷ 12

Answer: 12

  1. Brackets: 4 + 8 = 12
  2. Index: 122 = 144
  3. 144 ÷ 12 = 12
11.8 × 9 − 7 × 4

Answer: 44

  1. 8 × 9 = 72 and 7 × 4 = 28
  2. 72 − 28 = 44
12.31 − 14 ÷ 2

Answer: 24

  1. Divide first: 14 ÷ 2 = 7
  2. 31 − 7 = 24
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