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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.

## 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

Teachers are looking for lessons, activities, worksheets, quiz, mock test papers that are suitable for 7th grade math. Here's your compilation of lessons suitable for 7th grade to share with your students.

## Sum Up

Studying percentages helps the students to understand various aspects and other mathematical concepts related to percentage.

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