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

Time in the simple interest formula is always represented in

• months

• fraction form

• percent form

• years

• decimal form

When a store uses a 75% markup on an unknown original cost, c, what expressions can be used to calculate the cost to the customer after the markup?

• c + 0.75c OR 1.75c

• c - 0.75c OR 0.25c

When a store uses a 15% markdown on an unknown original cost, c, what expressions can be used to calculate the cost to the customer after the markdown?

• c - 0.15c OR 0.85c

• c + 0.15c OR 0.85c

Percent is a ratio to represent a quantity out of

• 1

• 10

• 100

• 1000

If you choose to use the percent equation, you must convert the percent to what? 

    (select all that are true)

• decimal

• fraction

• negative number

• exponent

____________ is a comparison between an estimation and the actual amount

• discount

• percent change

• tax

• percent error

When converting decimals to percents, you can remove the percent symbol, then multiply by 100, or just move the decimal point two places to the ______________. 

• right

• left

When converting percents to decimals, you can remove the percent symbol, then divide by 100, or just move the decimal point two places to the _____________. 

• left

• right

c + 0.75c OR 1.75c

• Simple Interest formula

• When a store uses a 75% markup on an unknown original cost, c, what expressions can be used to calculate the cost to the customer after the markup?

• When a store uses a 75% markdown on an unknown original cost, c, what expressions can be used to calculate the cost to the customer after the markdown?