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How do you perform computations involving different operations on
squares, square roots, cubes and cube roots?

LEARNING
18 STANDARDS

Perform computations
Find the value of each of the following: involving addition,


3
3
2
(a) 0.5 + 1 000 (b) (–3) – 64 subtraction,
multiplication, division
CHAPTER
3 and the combination



3
3 2

2
(c) 25 + (–0.2) ÷ 0.008 (d) 3 –3 3 × ( 36 – 2 ) of those operations on
8 squares, square roots,
cubes and cube roots.



3
2
(a) 0.5 + 1 000 (b) (–3) – 64
3
= 0.25 + 10 = –27 – 8
= 10.25 = –35
Find the value of



3
3 2
2
(c) 25 + (– 0.2) ÷ 0.008 (d) 3 –3 3 × ( 36 – 2 ) squares, square roots,
cubes or cube roots.
8
= 5 + 0.04 ÷ 0.2
= 3 – 27 × (6 – 8)
2
= 5 + 0.2 8 Solve the operation in
= 5.2 Solve the ÷ the brackets.
operation first. 3
= – × (–2) 2
2
3 2 Solve the operations ×
= – × 4 and ÷ from left to right.
2
1
= – 6 Solve the operations +
and – from left to right.
Self Practice 3.2h
1. Calculate the value of each of the following:

3
3
27 – 1.5
(a) 49 + 3 2 (b)  2 (c)  3
– 64 × 0.2
1

(d) (–2) ÷ 100 (e) 2 – 3 15 5 (f) 3 1 × 0.3 2
2
4 8 125
12 2 3 7 54
1

2
2
(g) ÷ – 2 (h) (–5) + 2 – 2 3 (i) ( 16 – 6) × 3 –
27 3 9 128
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Chapter 3
03 TB Math F1.indd 68 11/10/16 12:10 PM