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# Measurement for Praxis II ParaPro Test Prep Study Guide (page 6)

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Updated on Jul 5, 2011

### Converting Units of Time

The ParaPro Assessment may ask you to convert units of time. Just like converting U.S. customary or metric units, multiply when changing from a larger unit to a smaller unit and divide when changing from a smaller unit to a larger unit.

Example

A teacher creates a lesson plan for the week that will take four hours. How many minutes will the lesson plan take?

Because minutes are a smaller unit than hours, you need to multiply to convert the units. Remember that there are 60 minutes in an hour.

4 hours = ? minutes

4 hours × 60 minutes per hour = 240

Therefore, there are 240 minutes in 4 hours.

### Money

In addition to converting between units of length, capacity, weight, mass, and time, you may also be asked to convert between units of money. Remember that one cent is equal to of a dollar, or \$0.01. The values of U.S. coins are as follows:

1 penny = 1 cent = 1¢ = \$0.01
1 nickel = 5 cents = 5¢ = \$0.05
1 dime = 10 cents = 10¢ = \$0.10
1 quarter = 25 cents = 25¢ = \$0.25
1 dollar = 100 cents = 100¢ = \$1.00

### Converting Money

As always when converting units, multiply when changing from a larger unit to a smaller unit and divide when changing from a smaller unit to a larger unit. To convert dollars to cents, multiply by 100. To convert cents to dollars, divide by 100.

Example

Jillian has 7 dollars. How many dimes does she have?

To solve this problem, first convert Jillian's dollars to cents. Multiply the number of dollars by 100.

\$7 = 7 × 100¢ = 700¢

To convert from cents to dimes, you are going from a smaller unit to a larger unit—which means you have to divide. If Jillian has 700 cents, you need to divide by 10 to find out how many dimes she has.

700¢ ÷ 10 = 70 dimes

The practice quiz for this study guide can be found at:

Math for Praxis II ParaPro Test Prep Practice Problems