Percent Proportion

Front

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

Back

To find a percentage of a number, multiply the number by the percentage (in decimal form). Formula: (Percentage/100) * Number.

Front

What does it mean when we say 'X is Y% of Z'?

Back

It means that X is Y parts out of 100 parts of Z. To find Z, use the formula: Z = X / (Y/100).

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 then multiply by 100. Example: 1/4 = (1 ÷ 4) * 100 = 25%.

Front

What is 90% of 120?

Back

108

Front

198 is 33% of what number?

Back

600

Front

How do you find what percent one number is of another?

Back

To find what percent one number (A) is of another number (B), use the formula: (A/B) * 100.

Front

Martin's class has 28 students in it. 25% of those students are home sick today. How many students are home sick?

Back

7 students

Front

In the United States, 13 out of every 20 cans are recycled. What percent of cans are recycled?

Back

65%.

Front

What is 60% of 145?

Back

87

Front

What is the relationship between percentages, fractions, and decimals?

Back

Percentages are a way to express a number as a fraction of 100. A percentage can be converted to a decimal by dividing by 100.