Vocabulary

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Vocabulary
rate unit rate
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A rate is a comparison of two quantities that
have different units.
90 3
Ratio
Read as 90 miles per 3 hours.
90 miles 3 hours
Rate
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Unit rates are rates in which the second quantity
is 1.
90 3
30 1

30 miles, 1 hour
unit rate
or 30 mi/h
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Additional Example 1 Finding Unit Rates
Fred can type 30 words in half a minute. How many
words can he type in 1 minute?
Write a rate.
Multiply to find words per minute.
60 words 1 minute

Fred can type 60 words in one minute.
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Check It Out Example 1
Penelope can type 90 words in 2 minutes. How many
words can she type in 1 minute?
90 words 2 minutes
Write a rate.
Divide to find words per minute.
90 words 2 2 minutes 2
45 words 1 minute

Penelope can type 45 words in one minute.