Let’s solve each question step by step. Remember:
- “The square of a number” means multiply the number by itself.
Example: Square of 5 = 5 × 5 = 25
- “The square root of a number” means find the number that, when multiplied by itself, gives you the original number.
Example: Square root of 49 = 7, because 7 × 7 = 49
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(1) The square of 5 is:
5 × 5 = 25 → Answer:
(B) 25
(2) The square of 6 is:
6 × 6 = 36 → Answer:
(B) 36
(3) The square of 9 is:
9 × 9 = 81 → Answer:
(A) 81
(4) The square of 15 is:
15 × 15 = 225 → Answer:
(D) 225
(5) The square of 17 is:
17 × 17 = 289 → Answer:
(C) 289
(6) The square of 19 is:
19 × 19 = 361 → Answer:
(B) 361
(7) The square of 21 is:
21 × 21 = 441 → Answer:
(C) 441
(8) The square of 56 is:
56 × 56 = ?
Let’s calculate:
50 × 50 = 2500
50 × 6 = 300 → doubled (for both sides) = 600
6 × 6 = 36
Total = 2500 + 600 + 36 = 3136 → Answer:
(A) 3136
(9) The square of 33 is:
33 × 33 = ?
30 × 30 = 900
30 × 3 = 90 → doubled = 180
3 × 3 = 9
Total = 900 + 180 + 9 = 1089 → Answer:
(C) 1089
(10) The square root of 49 is:
What number times itself equals 49?
7 × 7 = 49 → Answer:
(D) 7
(11) The square root of 64 is:
What number times itself equals 64?
8 × 8 = 64 → Answer:
(D) 8
(12) The square root of 81 is:
What number times itself equals 81?
9 × 9 = 81 → Answer:
(C) 9
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Final Answer:
(1) B
(2) B
(3) A
(4) D
(5) C
(6) B
(7) C
(8) A
(9) C
(10) D
(11) D
(12) C
Parent Tip: Review the logic above to help your child master the concept of worksheet on square roots.
