# Express the follo

I. (i). 242/1000 = 242 × 10-3

242/1000 = 0.242

( 242 ÷ 1000 = 0.242)

(ii). 354/500 = (354/5) × 10-2

354/500 = 70.8 × 10-2

Or 354/500 = 70.8 ÷ 100

354/500 = 0.708

(iii). 2/5 = 2 ÷ 5

2/5 = 0.4

(iv). 115/4 = 115 ÷ 4

115/4 = 28.75

II. (i). 2/3 = 2 ÷ 3

2/3 = 0.6666666…

This is clearly a repeating or recurring decimal. Thus, round-off the decimal in 2-digit or so after the decimal point.

2/3 = 0.67

(ii). -25/36 = -25 ÷ 36

-25/36 = -0.6944444…

This is clearly a repeating or recurring decimal. Thus, by rounding off in 4-digit or so after the decimal point.

-25/36 = -0.6944

(iii). 22/7 = 22 ÷ 7

22/7 = 3.142857143…

This clearly is non-repeating, non-terminating decimal, which is a decimal number which continues endlessly with no group of digits repeating endlessly.

Thus, take only 2 or 3 digit after decimal point.

22/7 = 3.14

This number is also called π (pi).

(iv). 11/9 = 11 ÷ 9

11/9 = 1.2222222…

This is a repeating or recurring decimal. Thus, round it off to 2 or so digits after the decimal point.

11/9 = 1.22

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