We use the percent price (%) to express percent. Percents room used anywhere in actual life, for this reason you\"ll need to understand them well. Here are three ways to create the exact same thing:

15% = 15/100 = 0.15

Fifteen percent is the exact same as the fraction 15/100 and also the decimal 0.15. They all simply average \"fifteen out of a hundred.\" A percent can always be created as a decimal, and a decimal deserve to be created as a percent, prefer this:

0.85 = 85%

We deserve to find any type of percent the a given number by an altering the percent to a decimal and multiplying. One hundred percent of a number is just the number itself. 2 hundred percent of a number is double that number.

You are watching: 50 is 30 percent of what number

100% that 50 -> 50 200% of 50 -> 2 x 50 = 100

Let\"s uncover 30 percent that 400:

First change 30% to a decimal by moving the decimal suggest 2 areas to the left.

30% = 0.30

Then multiply.

0.30 x 400 = 120

30% the 400 is 120.

Mental tennis2007.org There\"s one easy way to uncover 10% of a number there is no multiplying.

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Just move the decimal suggest in the number left by one place. Let\"s try it with these numbers:

895 27 10,411

10% of 895 = 89.5 10% the 27 = 2.7 10% of 10,411 = 1,041.1

Examples write each as a percent:

$6 the end of $12 -> $6/$12 = 0.5 = 50% 34 out of 100 -> 34/100 = 0.34 = 34% 0.55 = 55% 1.2 = 120%

Find the value of n because that each problem:

n is 50% the 60 -> n = 0.5 x 60 = 30 n is 4% that 33 -> n = 0.04 x 33 = 1.32 n is 150% that 24 -> n = 1.5 x 24 = 36

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Homework assist | Pre-Algebra | Numbers
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·Place value
·Decimal numbers
·Estimating and rounding
·Adding / subtracting decimals
·Multiplying decimals
·Dividing decimals
·Percent
·Exponents
·Square roots
·Signed integers
·Adding and subtracting integers
·Multiplying and also separating integers
·Properties the integers