Ratios and Proportions

Which is a UNIT rate?

• 100 miles / 3 hours

• 35 miles / 1 hour

• 70 miles / 2 hours

Find the unit rate (how many avocados per bag):

42 avocados in 7 bags

• 7 avocados/bag

• 6 avocados/bag

• 7 bags/avocado

• 14 avocados/bag

Find the unit rate:

40 slices in 5 pizzas

______ slices per pizza

unit rate is a rate in which the unit in the denominator is:

• 0

• 3

• 1

• 2

Which is the better deal?
Oreos
$2.98 for 15 oz
OR
Chips Ahoy
$2.50 for 14 oz

• Oreos

• Chips Ahoy

A model of a house was built using the scale 5 in:25 ft. If a window in the model is 1.5 in. wide, how wide is the actual window?

• 90 ft

• 7.5 ft 

• 4.5 ft

• 45 in

The scale model of a building is 6.5 inches tall. How tall is the actual building if the scale used for the model is 1 inch = 150 feet?

• 650 feet

• 840 feet

• 900 feet

• 975 feet

A blueprint was using a scale of 3cm=4.5m. Find the actual length if it is 5cm on the drawing.

• 7.5

• 13.5

• 1.5

• 1.7

Use the shapes in the picture to write the ratio of STARS to SQUARES.

• 3 to 2

• 2 to 4

• 4 to 2

• 3 to 4

Determine whether each pair of ratios forms a proportion

• Proportion

• Not a Proportion