Year 5 Square and Cube Numbers Worksheet — Level 3 — Practice Set 3 — 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 3 — Answers
A square number is a number times itself; a cube number is a number times itself three times.
1.172 = (answer space)
Answer: 289
- 17 × 17 = 289
2.√49 = (answer space)
Answer: 7
- 7 × 7 = 49
3.100 is a square number.
Answer: True
10 × 10 = 100
4.23 = (answer space)
Answer: 8
- 2 × 2 × 2 = 8
5.The cube root of 216 is (answer space).
Answer: 6
- 6 × 6 × 6 = 216
6.729 is a cube number.
Answer: True
9 × 9 × 9 = 729
7.√249 lies between the whole numbers (answer space) and (answer space).
Answer: 15, 16
- 152 = 225 and 162 = 256
- 225 < 249 < 256
8.112 + 42 = (answer space)
Answer: 137
- 121 + 16 = 137
9.12 = (answer space)
Answer: 1
- 1 × 1 = 1
10.√9 = (answer space)
Answer: 3
- 3 × 3 = 9
11.83 is a square number.
Answer: False
92 = 81 and 102 = 100, so 83 is not a square number.
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.