Question

squaring numbers
a) find the values of the following.

1. $7^2$ 2) $13^2$ 3) $4^2$
2. $25^2$ 5) $42^2$ 6) $10^2$

b) find the squares of the following numerals.

1. 5 2) 49 3) 17
2. 21 5) 3 6) 34

c) 1) which of the following is the square of 20?
i) 40 ii) 200 iii) 400 iv) 220

1. which of the following is equal to $44^2$?

i) 1,936 ii) 1,863 iii) 1,369 iv) 1,96

Explanation:

Part A

Step1: Square 7

$7^2 = 7 \times 7 = 49$

Step2: Square 13

$13^2 = 13 \times 13 = 169$

Step3: Square 4

$4^2 = 4 \times 4 = 16$

Step4: Square 25

$25^2 = 25 \times 25 = 625$

Step5: Square 42

$42^2 = 42 \times 42 = 1764$

Step6: Square 10

$10^2 = 10 \times 10 = 100$

Part B

Step1: Square 5

$5^2 = 5 \times 5 = 25$

Step2: Square 49

$49^2 = 49 \times 49 = 2401$

Step3: Square 17

$17^2 = 17 \times 17 = 289$

Step4: Square 21

$21^2 = 21 \times 21 = 441$

Step5: Square 3

$3^2 = 3 \times 3 = 9$

Step6: Square 34

$34^2 = 34 \times 34 = 1156$

Part C

Step1: Calculate square of 20

$20^2 = 20 \times 20 = 400$

Step2: Calculate square of 44

$44^2 = 44 \times 44 = 1936$

Answer:

Part A

1. 49
2. 169
3. 16
4. 625
5. 1764
6. 100

Part B

1. 25
2. 2401
3. 289
4. 441
5. 9
6. 1156

Part C

1. iii) 400
2. i) 1,936