Review Percent Increase/Decrease, Tax, Tip, Interest (MOD35))

Front

What is percent increase?

Back

Percent increase is a measure of how much a quantity has grown relative to its original amount, expressed as a percentage.

Front

What is percent decrease?

Back

Percent decrease is a measure of how much a quantity has shrunk relative to its original amount, expressed as a percentage.

Front

How do you calculate simple interest?

Back

Simple interest can be calculated using the formula: Interest = Principal × Rate × Time.

Front

What is the formula for calculating percent change?

Back

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

Front

If an item costs $50 and is sold for $38, what is the percent decrease?

Back

Percent Decrease = ((50 - 38) / 50) × 100 = 24%.

Front

What is 30% of 80?

Back

30% of 80 is calculated as (30/100) × 80 = 24.

Front

What is a tip?

Back

A tip is a small amount of money given to someone for their service, typically calculated as a percentage of the total bill.

Front

How do you calculate tax on a purchase?

Back

Tax can be calculated by multiplying the purchase price by the tax rate (as a decimal).

Front

What is the difference between simple interest and compound interest?

Back

Simple interest is calculated only on the principal amount, while compound interest is calculated on the principal plus any interest that has already been added.

Front

If the original price of an item is $25 and it is now $15, what is the percent change?

Back

Percent Change = ((15 - 25) / 25) × 100 = -40% (decrease).