Percent, Percent Change, Percent Error, Mark Ups and Mark Downs, Simple Interest

What does the "i" in the simple interest formula [i=prt] stand for?

• principal (original/starting amount)

• time (in years)

• interest rate

• years

• interest

When converting percents to decimals, you can just move the decimal point two places to the left, or divide by ___________

• 10

• 100

• 1000

• 100%

_________ compares the difference to the original amount.

• Percent change

• Percent error

• discount

• tax

• tip

Percents is a special ratio comparing a number with _____________.

• itself

• 10

• an unknown quantity

• 100

Discounts, sales, clearance, and % off coupons are types of______

• Mark ups

• Mark downs

• commissions

• percent error

Commission, tax, tip (gratuity), and interest earned on a savings account are types of ________

• Mark ups

• mark downs

• percent error

• percent of change

The sale price when you get 20% off the original price, p, can be written as p-0.2p or written as what?

• o.4p

• 5.8p

• 1.65p

• 0.8p

The new price after a markup of 65% on the original price, p, can be written as p+0.65p or written as what?

• 4.65p

• 6.65p

• 1.65p

• 1.7p

What does the "r" in the simple interest formula [i=prt] stand for?

• principal (original/starting amount)

• time (in years)

• interest rate

• years

• interest

What does the "t" in the simple interest formula [i=prt] stand for?

• principal (original/starting amount)

• time (in years)

• interest rate

• years

• interest