Year 5 Square and Cube Numbers Worksheet — Level 3 — Practice Set 4 — 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 4 — Answers
A square number is a number times itself; a cube number is a number times itself three times.
1.202 = (answer space)
Answer: 400
- 20 × 20 = 400
2.√225 = (answer space)
Answer: 15
- 15 × 15 = 225
3.80 is a square number.
Answer: False
82 = 64 and 92 = 81, so 80 is not a square number.
4.63 = (answer space)
Answer: 216
- 6 × 6 × 6 = 216
5.The cube root of 343 is (answer space).
Answer: 7
- 7 × 7 × 7 = 343
6.64 is a cube number.
Answer: True
4 × 4 × 4 = 64
7.√326 lies between the whole numbers (answer space) and (answer space).
Answer: 18, 19
- 182 = 324 and 192 = 361
- 324 < 326 < 361
8.62 + 92 = (answer space)
Answer: 117
- 36 + 81 = 117
9.62 = (answer space)
Answer: 36
- 6 × 6 = 36
10.√9 = (answer space)
Answer: 3
- 3 × 3 = 9
11.149 is a square number.
Answer: False
122 = 144 and 132 = 169, so 149 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.