Year 8 Equation Word Problems Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 8 linear equations worksheet.
Year 8 Equation Word Problems Worksheet — Level 2 — Answers
For each problem, choose a letter for the unknown, write an equation, solve it, and check your answer in the words of the problem.
1.A rectangle is 8 cm longer than it is wide. Its perimeter is 96 cm. Find its width and length.
Answer: width 20 cm, length 28 cm
- 2(w + w + 8) = 96
- 4w + 16 = 96
- w = 20, so length = 28
2.Hunter thinks of a number, subtracts 6 and multiplies the result by 3. The answer is 51. What was the number?
Answer: 23
- 3(n − 6) = 51
- n − 6 = 17
- n = 23
3.The sum of 4 consecutive whole numbers is 122. Find the numbers.
Answer: 29, 30, 31, 32
- n + (n + 1) + (n + 2) + (n + 3) = 122
- 4n + 6 = 122
- n = 29
4.Kai thinks of a number, multiplies it by 6 and then adds 8. The answer is 38. Write an equation and find the number.
Answer: 5
- Let the number be n: 6n + 8 = 38
- 6n = 30
- n = 5
5.The sum of 3 consecutive whole numbers is 84. Find the numbers.
Answer: 27, 28, 29
- n + (n + 1) + (n + 2) = 84
- 3n + 3 = 84
- n = 27
6.The sum of 4 consecutive whole numbers is 162. Find the numbers.
Answer: 39, 40, 41, 42
- n + (n + 1) + (n + 2) + (n + 3) = 162
- 4n + 6 = 162
- n = 39
7.Cooper thinks of a number, multiplies it by 3 and then adds 6. The answer is 27. Write an equation and find the number.
Answer: 7
- Let the number be n: 3n + 6 = 27
- 3n = 21
- n = 7
8.Harper thinks of a number, subtracts 12 and multiplies the result by 2. The answer is 4. What was the number?
Answer: 14
- 2(n − 12) = 4
- n − 12 = 2
- n = 14
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.
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