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.
1.122 = (answer space)
Answer: 144
- 12 × 12 = 144
2.√1 = (answer space)
Answer: 1
- 1 × 1 = 1
3.4 is a square number.
Answer: True
2 × 2 = 4
4.83 = (answer space)
Answer: 512
- 8 × 8 × 8 = 512
5.The cube root of 27 is (answer space).
Answer: 3
- 3 × 3 × 3 = 27
6.75 is a cube number.
Answer: False
75 is not a whole number cubed.
7.√354 lies between the whole numbers (answer space) and (answer space).
Answer: 18, 19
- 182 = 324 and 192 = 361
- 324 < 354 < 361
8.42 + 112 = (answer space)
Answer: 137
- 16 + 121 = 137
9.162 = (answer space)
Answer: 256
- 16 × 16 = 256
10.√81 = (answer space)
Answer: 9
- 9 × 9 = 81
11.65 is a square number.
Answer: False
82 = 64 and 92 = 81, so 65 is not a square number.
12.93 = (answer space)
Answer: 729
- 9 × 9 × 9 = 729
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.