Proportions - Grade 5

What two products do you get when you cross-multiply the fractions 2/5 and 3/8?

• 16 and 15

• 10 and 24

• 6 and 40

• 10 and 8

What is the solution to the proportion a/b = c/d?

• ab = cd

• ad = bc

• ac = bd

• a = bcd

What is the value of y if 5/25 = y/5?

• 25

• 10

• 5

• 1

2 cm on a map are equal to 3 km in real life. If two points are 8 cm apart on the map, how far apart are they in real life?

• 6

• 24

• 12

• 10

5

You're baking a batch of 12 cupcakes. Each batch requires 100 grams of butter. Which proportion shows how much butter there is in each cupcake?

• 12/x = 100/1

• 1/12 = x/100

• 100/x = 1/12

• 12x = 100

100 birthday candles in 5 bags is proportional to 300 candles in how many bags?

• 20

• 10

• 30

• 15

If 3 kg of beans cost $1.50, how much does two kg cost?

• 2 $

• 1 $

• 0.75 $

• 0.50 $

If a recipe calls for 4 1/2 cups of flour for 48 cookies, how much flour would be needed for 24 cookies?

• 2 1/4

• 2 1/2

• 2

• 1

Five tickets to a carnival cost $45. How much would seven tickets cost?

• 54

• 72

• 63

• 81

A proportion often shows the relationship between:

• Two similar quotients

• Two similar triangle

• Two matching pairs

• Two equivalent ratios