Question

# Write each of the following as decimals:(i) 4025(ii) 39210(iii) 435(iv) 2512

Solution

## (i) 4025=40+25To write in decimal, we need to make the denominator 10 or 100 or 1000 by multiplying it by a number. But, to maintain the value of the fraction, we should also multiply the numerator by the same number. Thus, we get=40+2×25×2=40+410=40+0.4=40.4Thus, 4025=40.4(ii) 39210=39+210Here, the denominator is already 10.=39+0.2=39.2Thus, 39210=39.2(iii) 435=4+35=4+3×25×2=4+610=4+0.6=4.6Thus, 435=4.6(iv) 2512=25+12=25+1×52×5=25+510=25+0.5=25.5Thus,2512=25.5MathematicsRD Sharma (2013)Standard VI

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