How to convert a decimal into percentage?
We will follow the following steps for converting a decimal into a percentage:
Step I: Obtain the number in decimal form.
Step II: Multiply the number in decimal form by 100 and put percent sign (%)
Note: When we multiply the decimal number by 100, then we need to shift the decimal point two places to the right (add zeros if necessary).
I. Express each of the following decimal as percent:
(i) 0.8 = 0.8 × 100 % = 80 %
(ii) 1.2 = 1.2 × 100 % = 120 %
(iii) 7.1 = 7.1 × 100 % = 710 %
(iv) 10.1 = 10.1 ×
100 % = 1010 %
(v) 31.3 = 31.3 × 100 % = 3130 %
(vi) 123.7 = 123.7 × 100 % = 12370 %
(vii) 101.9 = 101.9 × 100 % = 10190 %
II. Conversion of decimal into percent:
(i) 0.29 = 0.29 × 100 % = 29 %
(ii) 0.25 = 0.25 × 100 % = 25 %
(iii) 0.01 = 0.01 × 100 % = 1 %
(iv) 0.51 = 0.51 × 100 % = 51 %
(v) 13.01 = 13.01 × 100 % = 1301 %
(vi) 201.17 = 201.17 × 100 % = 20117 %
(vii) 100.11 = 100.11 × 100 % = 10011 %
III. Convert the following decimal into a percentage:
(i) 0.083 = 0.083 × 100 % = 8.3 %
(ii) 0.225 = 0.225 × 100 % = 22.5 %
(iii) 0.001 = 0.001 × 100 % = 0.1 %
(iv) 0.003 = 0.003 × 100% = 0.3 %
(v) 0.107 = 0.107 × 100 % = 10.7 %
(vi) 1.037 = 1.037 × 100 % = 103.7 %
(vii) 21.275 = 21.275 × 100 % = 2127.5 %
Note: Decimals shifts by 2 places to the right.
To convert a decimal into a percent, we multiply the given decimal by 100 and add the percent symbol after the product.
IV. Express 0.17 as a percent
Solution:
We first convert the decimal number into a fraction.
0.17 = \(\frac{17}{100}\)
= 17 out of 100
= 17%
Questions and Answers on Decimal into Percentage:
I. Convert the following decimals to percentage.
(i) 0.5
(ii) 0.21
(iii) 0.08
(iv) 1.23
(v) 0.09
(vi) 0.65
Answers:
I. (i) 50%
(ii) 21%
(iii) 8%
(iv) 123%
(v) 9%
(vi) 65%
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