7th Grade Math Percents

In mathematics, a percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate the percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. It is represented by the symbol “%”. Percentages are used like fractions and decimals, as ways to describe parts of a whole. While learning percent calculations, one should know that the whole is considered to be made up of a hundred equal parts.

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Percents

Important points of percentage

Percentages have no dimension. Hence it is called a dimensionless number.
If we say, 50% of a number, then it means 50 percent of its whole.
Percentages can also be represented in decimal or fraction form, such as 0.6%, 0.25%, etc.
To determine the percentage, we have to divide the value by the total value and then multiply the resultant by 100.
Percentage formula = (Value/Total value) × 100.

7th Grade Math Percents Examples

1. What is 50% of 30?

Ø Given 50% of 30

Ø = (50/100)*30

Ø = 1500/100

Ø = 15

Ø Therefore, 50% of 30 is 15.

2. Find 20% of 40?

Ø Given 20% of 40

Ø = (20/100)*40

Ø = (20*40)/100

Ø = 800/100

Ø = 8

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Percentage Worksheets

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percentage Quiz

Percentage Unit Test