Question

Find the squares of the following:

(1) 9.5
(2) 1.12
(3) 0.09
(4) –0.01
(5) 0.7
(6) –2.16
(7) –5.13
(8) 7.7
(9) –0.002
(10) –9.1
(11) 1.23
(12) –0.45

Answer 1

(1) Square of 9.5 = (9.5)²
= 9.5 × 9.5 = 90.25

(2) Square of 1.12 = (1.12)²
= 1.12 × 1.12 = 1.2544

(3) Square of 0.09 = (0.09)²
= 0.09 × 0.09 = 0.0081

(4) Square of (–0.01) = (–0.01)²
(–0.01 × –0.01)
= 0.0001 (Square of a negative number is always positive)

(5) Square of 0.7 = (0.7)²
= 0.7 × 0.7 = 0.49

(6) Square of (– 2.16) = (–2.16)²
= (–2.16 × –2.16)
= 4.6656 (Square of a negative number is always positive)

(7) Square of (– 5.13) = (–5.13)²
= (–5.13 × –5.13)
= 26.3169 (Square of a negative number is always positive)

(8) Square of 7.7 = (7.7)²
= 7.7 × 7.7 = 59.29

(9) Square of (– 0.002) = (–0.002)²
= (–0.002 × –0.002)
= 0.000004 (Square of a negative number is always positive)

(10) Square of (– 9.1) = (–9.1)²
= (–9.1 × –9.1)
= 82.81 (Square of a negative number is always positive)

(11) Square of 1.23 = (1.23)²
= 1.23 × 1.23 = 1.5129

(12) Square of (– 0.45) = (–0.45)²
= (–0.45 × –0.45)
= 0.2025 (Square of a negative number is always positive)