Pre-algebra6-1

Ratios and Rates

Ratio: a comparison of 2 numbers by division

5 out of 20 5:20 5 20

Ratios need to be written in simplest form

5/20 = 1/4

Ratios

Rate: ratio with different units of measure

Ex: 200 miles 5 gallons

Rates

Unit Rate: rate with the denominator of 1

Ex: $306 for 17 tickets

Unit Rate

1) 50 to 300= __________________

2) 30:45 = _________________

3) 128 to 56 = _________________

Write each ratio or rate in simplest form

4) 16 losses in 40 games = ___________

5) 14 dogs to 21 cats = ___________

#4 & 5

1) 300 miles on 12 gallons

2) $7.77 for 3 pounds

Write as a unit rate

3) 194.8 miles in 4 hours

#3