Year 11 Equation Word Problems Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 11 linear equations worksheet.
Year 11 Equation Word Problems Worksheet — Level 2 — 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.A rectangle is 2 cm longer than it is wide. Its perimeter is 12 cm. Find its width and length.
Answer: width 2 cm, length 4 cm
- 2(w + w + 2) = 12
- 4w + 4 = 12
- w = 2, so length = 4
2.A rectangle is 9 cm longer than it is wide. Its perimeter is 42 cm. Find its width and length.
Answer: width 6 cm, length 15 cm
- 2(w + w + 9) = 42
- 4w + 18 = 42
- w = 6, so length = 15
3.Archie thinks of a number, subtracts 10 and multiplies the result by 5. The answer is 45. What was the number?
Answer: 19
- 5(n − 10) = 45
- n − 10 = 9
- n = 19
4.Lucas 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
5.Oliver thinks of a number, subtracts 5 and multiplies the result by 5. The answer is 55. What was the number?
Answer: 16
- 5(n − 5) = 55
- n − 5 = 11
- n = 16
6.A rectangle is 5 cm longer than it is wide. Its perimeter is 62 cm. Find its width and length.
Answer: width 13 cm, length 18 cm
- 2(w + w + 5) = 62
- 4w + 10 = 62
- w = 13, so length = 18
7.A rectangle is 2 cm longer than it is wide. Its perimeter is 64 cm. Find its width and length.
Answer: width 15 cm, length 17 cm
- 2(w + w + 2) = 64
- 4w + 4 = 64
- w = 15, so length = 17
8.Oliver thinks of a number, subtracts 6 and multiplies the result by 4. The answer is 20. What was the number?
Answer: 11
- 4(n − 6) = 20
- n − 6 = 5
- n = 11
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.