Estimating Percentages and Fractions

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare proportions.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal over 1, multiply the numerator and denominator by 10 for each digit after the decimal point, and simplify.

Front

Convert 0.75 to a fraction.

Back

Front

What is the formula to estimate a percentage of a number?

Back

To estimate a percentage of a number, multiply the number by the percentage (as a decimal). For example, to find 20% of 50, calculate 50 x 0.20 = 10.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100.

Front

Convert 25% to a fraction and simplify.

Back

Front

What is 150% as a decimal?

Back

1.5

Front

Estimate 10% of 250.

Back

25

Front

What is the relationship between fractions and percentages?

Back

Fractions and percentages both represent parts of a whole. A percentage is a fraction with a denominator of 100.

Front

Convert 0.333... to a fraction.

Back