Ratio and Rates with Fractions

A ratio is

• another way of multiplying

• a comparison of two quantities using division.

• is a two dimensional figure.

• is the same as the associative property.

A rate is a

• different way of solving probability.

• ratio of unknowns.

• ratio of two quantities with the same unit.

• ratio of two quantities with different units.

There are 45 boys and 30 girls on the soccer team, which ratio shows the ratio in simplest terms

• 45 to 30

• 30:45

• 3/2

• 9/6

Find the unit rate from this complex fraction

_3/4_

1/2

• 3/2

• 3/8

• 1-1/2

• 5/4

Four pounds of bananas cost $6.  What is the cost per pound of bananas? (What is the unit rate?)

• $24 per pound

• $1.50 per pound

• $1 per pound

• $6 per pound

Will spent $3.75 for 3 pounds of granola. What is his unit rate in dollars per pound?

• $1.25 per pound

• $1 per pound

• $2 per pound

• $1.50 per pound

Sparkle Cleaners uses 2/3 of a jug of window cleaner in 4 weeks. How much window cleaner do they use in 1 week?

_____ jugs per week

• 1/6 of a jug

• 6 jugs

• 1/3 of a jug

• 3 jugs

Jeff is making a paint where he is mixing red and blue paint. The table shows the different mixtures being used. What is the unit rate for the amount of blue paint to the amount of red paint?

What is a Ratio?

• Is a comparison of two quantities

• A rate with a denominator of one

• It is when the only factor the numerator and denominator share is a one

• Two decimals that can be multiplied

What is a rate for this graph?

• 20 minutes per 6 miles

• 60 minutes per 12 miles

• 80 minutes per 24 miles

• 100 minutes per 24 miles