10th Grade Equation Word Problems Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 10th Grade linear equations worksheet.
10th Grade Equation Word Problems Worksheet — Level 2 — Practice Set 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.Lucas thinks of a number, subtracts 3 and multiplies the result by 2. The answer is 24. What was the number?
Answer: 15
- 2(n − 3) = 24
- n − 3 = 12
- n = 15
2.Hunter thinks of a number, subtracts 8 and multiplies the result by 4. The answer is 40. What was the number?
Answer: 18
- 4(n − 8) = 40
- n − 8 = 10
- n = 18
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.Tom thinks of a number, multiplies it by 3 and then adds 3. The answer is 51. Write an equation and find the number.
Answer: 16
- Let the number be n: 3n + 3 = 51
- 3n = 48
- n = 16
5.Aisha thinks of a number, multiplies it by 5 and then adds 15. The answer is 55. Write an equation and find the number.
Answer: 8
- Let the number be n: 5n + 15 = 55
- 5n = 40
- n = 8
6.A rectangle is 10 cm longer than it is wide. Its perimeter is 44 cm. Find its width and length.
Answer: width 6 cm, length 16 cm
- 2(w + w + 10) = 44
- 4w + 20 = 44
- w = 6, so length = 16
7.A rectangle is 4 cm longer than it is wide. Its perimeter is 40 cm. Find its width and length.
Answer: width 8 cm, length 12 cm
- 2(w + w + 4) = 40
- 4w + 8 = 40
- w = 8, so length = 12
8.Ruby thinks of a number, multiplies it by 5 and then adds 2. The answer is 12. Write an equation and find the number.
Answer: 2
- Let the number be n: 5n + 2 = 12
- 5n = 10
- n = 2
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.