Year 5 Square and Cube Numbers Worksheet — Level 3 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 5 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 5 · Mathematics · Factors, Multiples & PrimesYear 5 Square and Cube Numbers Worksheet — Level 3 — Practice Set 2 — Answers
A square number is a number times itself; a cube number is a number times itself three times.
1.72 = (answer space)
Answer: 49
- 7 × 7 = 49
2.√256 = (answer space)
Answer: 16
- 16 × 16 = 256
3.8 is a square number.
Answer: False
22 = 4 and 32 = 9, so 8 is not a square number.
4.43 = (answer space)
Answer: 64
- 4 × 4 × 4 = 64
5.The cube root of 1000 is (answer space).
Answer: 10
- 10 × 10 × 10 = 1000
6.8 is a cube number.
Answer: True
2 × 2 × 2 = 8
7.√287 lies between the whole numbers (answer space) and (answer space).
Answer: 16, 17
- 162 = 256 and 172 = 289
- 256 < 287 < 289
8.62 + 62 = (answer space)
Answer: 72
- 36 + 36 = 72
9.42 = (answer space)
Answer: 16
- 4 × 4 = 16
10.√25 = (answer space)
Answer: 5
- 5 × 5 = 25
11.49 is a square number.
Answer: True
7 × 7 = 49
12.103 = (answer space)
Answer: 1000
- 10 × 10 × 10 = 1000
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.