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 4 squared (4²)?
2. What is 14 squared (14²)?
3. What is 20 squared (20²)?
4. What is 12 squared (12²)?
5. What is the positive square root of 121 (√121)?
6. What is 2 squared (2²)?
7. What is 11 squared (11²)?
8. What is 18 squared (18²)?
9. What is the positive square root of 361 (√361)?
10. What is the positive square root of 256 (√256)?
11. What is 7 squared (7²)?
12. What is 10 squared (10²)?
12 questions · Seed 53 · 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 4 squared (4²)?
2. What is 14 squared (14²)?
19614² means 14 × 14 = 196.
3. What is 20 squared (20²)?
40020² means 20 × 20 = 400.
4. What is 12 squared (12²)?
14412² means 12 × 12 = 144.
5. What is the positive square root of 121 (√121)?
11Since 11 × 11 = 121, √121 = 11.
6. What is 2 squared (2²)?
7. What is 11 squared (11²)?
12111² means 11 × 11 = 121.
8. What is 18 squared (18²)?
32418² means 18 × 18 = 324.
9. What is the positive square root of 361 (√361)?
19Since 19 × 19 = 361, √361 = 19.
10. What is the positive square root of 256 (√256)?
16Since 16 × 16 = 256, √256 = 16.
11. What is 7 squared (7²)?
12. What is 10 squared (10²)?
10010² means 10 × 10 = 100.
12 questions · Seed 53 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9
Square numbers & square roots
Take your time. Show your thinking.
1. What is 4 squared (4²)?
2. What is 14 squared (14²)?
3. What is 20 squared (20²)?
4. What is 12 squared (12²)?
5. What is the positive square root of 121 (√121)?
6. What is 2 squared (2²)?
7. What is 11 squared (11²)?
8. What is 18 squared (18²)?
9. What is the positive square root of 361 (√361)?
10. What is the positive square root of 256 (√256)?
11. What is 7 squared (7²)?
12. What is 10 squared (10²)?
12 questions · Seed 53 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9
Square numbers & square roots
Answers and reasoning. Review before teaching.
1. What is 4 squared (4²)?
2. What is 14 squared (14²)?
19614² means 14 × 14 = 196.
3. What is 20 squared (20²)?
40020² means 20 × 20 = 400.
4. What is 12 squared (12²)?
14412² means 12 × 12 = 144.
5. What is the positive square root of 121 (√121)?
11Since 11 × 11 = 121, √121 = 11.
6. What is 2 squared (2²)?
7. What is 11 squared (11²)?
12111² means 11 × 11 = 121.
8. What is 18 squared (18²)?
32418² means 18 × 18 = 324.
9. What is the positive square root of 361 (√361)?
19Since 19 × 19 = 361, √361 = 19.
10. What is the positive square root of 256 (√256)?
16Since 16 × 16 = 256, √256 = 16.
11. What is 7 squared (7²)?
12. What is 10 squared (10²)?
10010² means 10 × 10 = 100.
12 questions · Seed 53 · Age guidance, not curriculum certification