6th Grade Percents Review

Front

What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'. For example, 50% means 50 out of 100.

Front

How do you calculate the percent of a part compared to a whole?

Back

To calculate the percent of a part compared to a whole, use the formula: (Part/Whole) x 100. For example, if there are 4 boys in a class of 16 students, the percent of boys is (4/16) x 100 = 25%.

Front

What is 50% of a number?

Back

50% of a number is half of that number. For example, 50% of 148 is 148/2 = 74.

Front

How do you find 10% of a number?

Back

To find 10% of a number, divide the number by 10. For example, 10% of 40 is 40/10 = 4.

Front

If 65% of students buy lunch, what percent do not buy lunch?

Back

If 65% buy lunch, then 100% - 65% = 35% do not buy lunch.

Front

What is the formula to find the total when given a percent and a part?

Back

The formula is: Total = Part / (Percent/100). For example, if 45% of Mrs. Breon's books are non-fiction and there are 90 non-fiction books, the total number of books is 90 / (45/100) = 200.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and then multiply by 100. For example, 1/4 = (1 ÷ 4) x 100 = 25%.

Front

What does it mean if a student scores 75% on a test?

Back

It means the student answered 75 out of 100 questions correctly, or 75 out of a possible total score.

Front

How do you calculate the percent increase?

Back

Percent increase is calculated using the formula: ((New Value - Old Value) / Old Value) x 100. For example, if a price increases from $20 to $25, the percent increase is ((25 - 20) / 20) x 100 = 25%.

Front

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

Back

Fractions, decimals, and percents are different ways to represent the same value. For example, 1/2 = 0.5 = 50%.