ZTZ Percentages and Interest Dec 16

Front

What must rates be converted into before multiplying in the formula I = Prt?

Back

Decimals

Front

What is the sale price of a $72 game with a 20% discount?

Back

$57.60

Front

If 15 out of 25 boys chose to go swimming at camp, what percent is that?

Back

60%

Front

If Magnus puts $270 into a bank account that earns 12% interest annually, what will his balance be after 10 years?

Back

$594

Front

What is 90% of 250? Solve using proportions!

Back

225

Front

Define 'percentage'.

Back

A percentage is a fraction expressed as a part of 100.

Front

What is the formula for calculating simple interest?

Back

I = Prt, where I is interest, P is principal, r is rate, and t is time.

Front

How do you convert a percentage to a decimal?

Back

Divide the percentage by 100.

Front

What is a discount?

Back

A reduction in the original price of an item.

Front

How do you calculate the sale price after a discount?

Back

Sale Price = Original Price - Discount Amount.