Relating Fractions, Percents, and Decimals...
”55% of girls” means “55 girls per every hundred girls.”
Percents can be written in decimal form or in fraction form.
Example 1 Percents to Decimals:
To write 55% as a decimal,
move the decimal point two places to
the left. 55% means 55 hundredths.
55 hundredths can be written as 0.55
Example 2 Decimals to Percents:
To write a decimal as a percent,
move the decimal point two places to the right.
1.747 = 174.7%
Example 3 Percents to Fractions:
To write 55% as a fraction,
put the number over 100.
Simplify the fraction if you can.
55/100 simplifies to 11/20
Example 4 Fractions to Percents:
To write a 2/5 as a percent,
divide to find a decimal.
2 divided by 5 = 0.4
Then write the decimal as a percent.