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27 27 9 Simplify the
(c) =
48 4816 fraction first.
9
=
16 36

(d) 0.36 =
3
= 1 2 2 100
4 6 2
= 1 2
3 10
=
CHAPTER
3 4 6
=
10

(d) 0.36 = 0.6 Express as a square = 0.6
 2
in terms of other
= 0.6 decimal number.
Self Practice 3.1d

1. Find the value of each of the following without using a calculator.

(a) 81 (b)  (c)  (d) 
49
121
900
49 1 50
2.25
(e) (f ) 7 (g) (h) 
81 9 128
How do you determine the square root of a positive number using
technological tools?

7 LEARNING
STANDARDS
Calculate the value of each of the following by using a Determine the square
calculator and give your answer correct to two decimal places. roots of a positive
number using

(a) 89 (b)  (c) 6 2 technological tools.
154.7
7


(a) 89 = 9. 43 (2 d.p.) Press  8 9 =

(b) 154.7 = 12. 44 (2 d.p.) Press  1 5 4 · 7 =
2
(c) 6 = 2.51 (2 d.p.) Press  6 a c 2 a c 7 =
b
b
7
Self Practice 3.1e

1. Find the value of each of the following by using a calculator. Give your answer
correct to two decimal places.

37.81
(a) 43 (b)  (c) 7 (d) 12 5
15 6

54
Chapter 3

03 TB Math F1.indd 54 11/10/16 12:09 PM