Percent word problems

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 calculate the percentage of a part compared to a whole?

Back

To calculate the percentage, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100.

Front

What is the formula to find the part when given the percentage and the whole?

Back

Part = (Percentage/100) x Whole.

Front

If 30% of a class of 40 students passed a test, how many students passed?

Back

12 students passed. (30/100) x 40 = 12.

Front

What is the total number of votes if 310 were in favor and 190 were opposed?

Back

The total number of votes is 500. (310 + 190 = 500).

Front

If 20% of 20 council members voted in favor of a tax, how many members is that?

Back

4 council members voted in favor. (20% of 20 = 0.2 x 20 = 4).

Front

What percentage of marbles are yellow if there are 42 yellow marbles out of 60 total marbles?

Back

70%. (42/60) x 100 = 70%.

Front

How do you find the whole when given the part and the percentage?

Back

Whole = Part / (Percentage/100).

Front

If 24 painters make up 75% of a crew, how many painters are in the crew?

Back

32 painters. (24 / 0.75 = 32).

Front

What is the relationship between part, whole, and percentage?

Back

The part is a portion of the whole, and the percentage expresses that part in relation to the whole.