Percent Proportions Flashcard

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate what percent one number is of another?

Back

To find what percent 'A' is of 'B', use the formula: (A/B) * 100.

Front

120 is what percent of 40?

Back

300%.

Front

72 is what percent of 150?

Back

48%.

Front

What is the formula for finding the percentage increase?

Back

Percentage Increase = ((New Value - Old Value) / Old Value) * 100.

Front

What is the formula for finding the percentage decrease?

Back

Percentage Decrease = ((Old Value - New Value) / Old Value) * 100.

Front

If 25% of a number is 50, what is the number?

Back

The number is 200.

Front

What does it mean if a value is 100% of another value?

Back

It means the value is equal to the other value.

Front

If a shirt costs $40 and is on sale for 25% off, what is the sale price?

Back

The sale price is $30.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.