Converting Decimals to Percentage

Converting Decimals to Percentage

We have seen how to convert fractions into per cent. Let us now learn how to convert decimals into per cent.

Example 2.10

Convert the given decimals to percentage.

(i) 0.85  (ii) 0.05  (iii) 0.3  (iv) 0.025  (v) 2.25

Solution

(i) 0.85 = 0.85 ×100% = 85/100 ×100% = 85%

(ii) 0.05 =5/100 ×100% = 5%

(iii) 0.3 = 3/10 ×100% = 30%

(iv) 0.025 = [25/1000 ] × 100% = 25 / 10% = 5/2 % or 2 . 5 %

(v) 2.25 = 225/100 × 100% = 225%

Try these

Convert these decimals to percentage.

(i) 0.25  (ii) 0.07    (iii) 0.8    (iv) 0.375  (v) 3.75 

Solution

(i) 0.25 = 25/100 = 25%

(ii) 0.7 = 7/100 = 7%

(iii) 0.8 = 80/100 = 80%

(iv) 0.375 = 375/1000 =  375/10 × 1/100 = 37.5/100 = 3.75%

(v) 3.75 = 375/100 = 375%