Year 8 Equation Word Problems Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 8 linear equations worksheet.
Year 8 Equation Word Problems Worksheet — Level 1 — Practice Set 3 — 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.Mia thinks of a number, subtracts 4 and multiplies the result by 3. The answer is 45. What was the number?
Answer: 19
- 3(n − 4) = 45
- n − 4 = 15
- n = 19
2.Ethan thinks of a number, subtracts 6 and multiplies the result by 5. The answer is 40. What was the number?
Answer: 14
- 5(n − 6) = 40
- n − 6 = 8
- n = 14
3.Zoe thinks of a number, subtracts 4 and multiplies the result by 2. The answer is 36. What was the number?
Answer: 22
- 2(n − 4) = 36
- n − 4 = 18
- n = 22
4.Chloe thinks of a number, multiplies it by 5 and then adds 3. The answer is 78. Write an equation and find the number.
Answer: 15
- Let the number be n: 5n + 3 = 78
- 5n = 75
- n = 15
5.Lucas thinks of a number, subtracts 9 and multiplies the result by 3. The answer is 39. What was the number?
Answer: 22
- 3(n − 9) = 39
- n − 9 = 13
- n = 22
6.Harper thinks of a number, subtracts 7 and multiplies the result by 3. The answer is 48. What was the number?
Answer: 23
- 3(n − 7) = 48
- n − 7 = 16
- n = 23
7.Aisha thinks of a number, subtracts 12 and multiplies the result by 5. The answer is 50. What was the number?
Answer: 22
- 5(n − 12) = 50
- n − 12 = 10
- n = 22
8.Lucas thinks of a number, multiplies it by 5 and then adds 7. The answer is 22. Write an equation and find the number.
Answer: 3
- Let the number be n: 5n + 7 = 22
- 5n = 15
- n = 3
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.