Percentage Equations

Use the equation above to find 62% of 89.

Part = ?

Percent = 62% ----> 0.62

Whole = 89

• 128

• 84.4

• 55.18

• 37.51

50% of a whole number is 75. Use the equation to find the whole number.

Part = 75

Percent = 50% ----> 0.50

Whole = ?

• 150

• 225

• 83

• 134

25% of a whole number is 40. Use the equation to find the whole number.

Part = 40

Percent = 25% ----> 0.25

Whole = ?

60% of a whole number is 312. Use the equation to find the whole number.

Part = 312

Percent = 60% ----> 0.60

Whole = ?

In a group of 20 children, 25% are girls. How many boys are there in the class?

Jack ate 10 cady bars on Monday. If there was originally 20 candy bars, what percentage did Jack eat the candy bars?

• 50%

• 20%

• 2%

• 5%

21% of the cars are diesel and that makes 35 cars that are diesel. How many cars are there in total?

40 kids walk to school. That was 60% of the kids in the school. How many kids are in the school?

• 70

In the bag, there 30% of the marbles are blue, and there are 40 blue marbles. How many marbles are there?

There are 200 boys in a room. That is 40% of the people in the room. How many people are in the room?