Back to worksheetsMathsAges 7-9
Square numbers & square roots
Evaluate whole-number squares (n²) and find exact positive square roots (√n). Review suitability for your learners before teaching.
Worksheet StudioPractice pack · Ages 7-9
Square numbers & square roots
Take your time. Show your thinking.
1. What is 13 squared (13²)?
2. What is the positive square root of 4 (√4)?
3. What is the positive square root of 169 (√169)?
4. What is the positive square root of 25 (√25)?
5. What is 15 squared (15²)?
6. What is the positive square root of 225 (√225)?
7. What is the positive square root of 361 (√361)?
8. What is 17 squared (17²)?
9. What is the positive square root of 121 (√121)?
10. What is the positive square root of 196 (√196)?
11. What is 10 squared (10²)?
12. What is the positive square root of 289 (√289)?
12 questions · Seed 52 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 7-9
Square numbers & square roots
Answers and reasoning. Review before teaching.
1. What is 13 squared (13²)?
16913² means 13 × 13 = 169.
2. What is the positive square root of 4 (√4)?
2Since 2 × 2 = 4, √4 = 2.
3. What is the positive square root of 169 (√169)?
13Since 13 × 13 = 169, √169 = 13.
4. What is the positive square root of 25 (√25)?
5Since 5 × 5 = 25, √25 = 5.
5. What is 15 squared (15²)?
22515² means 15 × 15 = 225.
6. What is the positive square root of 225 (√225)?
15Since 15 × 15 = 225, √225 = 15.
7. What is the positive square root of 361 (√361)?
19Since 19 × 19 = 361, √361 = 19.
8. What is 17 squared (17²)?
28917² means 17 × 17 = 289.
9. What is the positive square root of 121 (√121)?
11Since 11 × 11 = 121, √121 = 11.
10. What is the positive square root of 196 (√196)?
14Since 14 × 14 = 196, √196 = 14.
11. What is 10 squared (10²)?
10010² means 10 × 10 = 100.
12. What is the positive square root of 289 (√289)?
17Since 17 × 17 = 289, √289 = 17.
12 questions · Seed 52 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9
Square numbers & square roots
Take your time. Show your thinking.
1. What is 13 squared (13²)?
2. What is the positive square root of 4 (√4)?
3. What is the positive square root of 169 (√169)?
4. What is the positive square root of 25 (√25)?
5. What is 15 squared (15²)?
6. What is the positive square root of 225 (√225)?
7. What is the positive square root of 361 (√361)?
8. What is 17 squared (17²)?
9. What is the positive square root of 121 (√121)?
10. What is the positive square root of 196 (√196)?
11. What is 10 squared (10²)?
12. What is the positive square root of 289 (√289)?
12 questions · Seed 52 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9
Square numbers & square roots
Answers and reasoning. Review before teaching.
1. What is 13 squared (13²)?
16913² means 13 × 13 = 169.
2. What is the positive square root of 4 (√4)?
2Since 2 × 2 = 4, √4 = 2.
3. What is the positive square root of 169 (√169)?
13Since 13 × 13 = 169, √169 = 13.
4. What is the positive square root of 25 (√25)?
5Since 5 × 5 = 25, √25 = 5.
5. What is 15 squared (15²)?
22515² means 15 × 15 = 225.
6. What is the positive square root of 225 (√225)?
15Since 15 × 15 = 225, √225 = 15.
7. What is the positive square root of 361 (√361)?
19Since 19 × 19 = 361, √361 = 19.
8. What is 17 squared (17²)?
28917² means 17 × 17 = 289.
9. What is the positive square root of 121 (√121)?
11Since 11 × 11 = 121, √121 = 11.
10. What is the positive square root of 196 (√196)?
14Since 14 × 14 = 196, √196 = 14.
11. What is 10 squared (10²)?
10010² means 10 × 10 = 100.
12. What is the positive square root of 289 (√289)?
17Since 17 × 17 = 289, √289 = 17.
12 questions · Seed 52 · Age guidance, not curriculum certification