Math Practice Problems - Percent of Quantity

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Percent of Quantity - Sample Math Practice Problems

The math problems below can be generated by MathScore.com, a math practice program for schools and individual families. References to complexity and mode refer to the overall difficulty of the problems as they appear in the main program. In the main program, all problems are automatically graded and the difficulty adapts dynamically based on performance. Answers to these sample questions appear at the bottom of the page. This page does not grade your responses.

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Complexity=1, Mode=percent

Solve.

Complexity=1, Mode=quantity

Solve.

Complexity=1

Solve.

Answers

Complexity=1, Mode=percentOf

Solve.

#	Problem	Correct Answer	Your Answer
1	What is 200% of 16?
Solution 200% of anything is twice itself. This means 200% of 16 is 32.

Problem

Correct Answer

Your Answer

What is 125% of 96?

Solution
Solve by converting the percent into a decimal.
125% = 1.25
125% of 96 = (1.25)(96) = 120

Alternate Solution
Solve by converting the percent into a fraction.
125% = 125
100 =
5
4

125% of 96 =
5
4
• 96 = 120

Complexity=1, Mode=percent

Solve.

Problem

Correct Answer

Your Answer

What percent is 30 of 75?

Solution
Let p be the percent.

100

75p	=	(30)(100)
p	=	40

Problem

Correct Answer

Your Answer

What percent is 26 of 325?

Solution
Let p be the percent.

100

325

325p	=	(26)(100)
p	=	8

Complexity=1, Mode=quantity

Solve.

Problem

Correct Answer

Your Answer

1 is 20% of what number?

Solution
Convert the percent to either a fraction or decimal and solve.

20%

100

0.2

Let n be the number.

	=
20n	=	(1)(100)
n	=	5

0.2	=
n	=		=	5

Problem

Correct Answer

Your Answer

6 is 5% of what number?

Solution
Convert the percent to either a fraction or decimal and solve.

100

0.05

Let n be the number.

	=
5n	=	(6)(100)
n	=	120

0.05	=
n	=		=	120

Complexity=1

Solve.

Problem

Correct Answer

Your Answer

91 is what percent of 1300?

Solution
Let p be the percent.

100

1300

1300p	=	(91)(100)
p	=	7

Problem

Correct Answer

Your Answer

Find 90% of 240.

Solution
Solve by converting the percent into a decimal.
90% = 0.9
90% of 240 = (0.9)(240) = 216

Alternate Solution
Solve by converting the percent into a fraction.
90% = 90
100 =
9
10

90% of 240 =
9
10
• 240 = 216

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