Percents Review

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 convert a percent to a decimal?

Back

To convert a percent to a decimal, divide the percent by 100. For example, 5.8% becomes 0.058.

Front

How do you convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100. For example, 0.7 becomes 70%.

Front

What is the formula to find the selling price after a discount?

Back

Selling Price = Original Price - (Original Price × Discount Rate).

Front

If an item costs $50 and has a 20% discount, what is the selling price?

Back

Selling Price = $50 - ($50 × 0.20) = $40.

Front

What is percent change?

Back

Percent change is the difference between the new value and the old value, divided by the old value, multiplied by 100.

Front

How do you calculate percent change?

Back

Percent Change = ((New Value - Old Value) / Old Value) × 100.

Front

If a price increases from $30 to $45, what is the percent increase?

Back

Percent Increase = ((45 - 30) / 30) × 100 = 50%.

Front

If a price decreases from $80 to $60, what is the percent decrease?

Back

Percent Decrease = ((80 - 60) / 80) × 100 = 25%.

Front

How do you express a fraction as a percent?

Back

To express a fraction as a percent, divide the numerator by the denominator and multiply by 100.