5th Grade Square and Cube Numbers Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 5th Grade factors, multiples & primes worksheet.
5th Grade Square and Cube Numbers Worksheet — Level 1 — Practice Set 2 — Answers
A square number is a number times itself; a cube number is a number times itself three times.
1.32 = (answer space)
Answer: 9
- 3 × 3 = 9
2.√4 = (answer space)
Answer: 2
- 2 × 2 = 4
3.81 is a square number.
Answer: True
9 × 9 = 81
4.62 = (answer space)
Answer: 36
- 6 × 6 = 36
5.√81 = (answer space)
Answer: 9
- 9 × 9 = 81
6.121 is a square number.
Answer: True
11 × 11 = 121
7.92 = (answer space)
Answer: 81
- 9 × 9 = 81
8.√121 = (answer space)
Answer: 11
- 11 × 11 = 121
9.5 is a square number.
Answer: False
22 = 4 and 32 = 9, so 5 is not a square number.
10.22 = (answer space)
Answer: 4
- 2 × 2 = 4
11.√49 = (answer space)
Answer: 7
- 7 × 7 = 49
12.23 is a square number.
Answer: False
42 = 16 and 52 = 25, so 23 is not a square number.
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.