Measurement Conversions and Ratios

2 pounds = ______ ounces

Mathematical Equivalence

ON

Convert: 7 lb = ______kg

when 1 lb = 0.45 kg

Mathematical Equivalence

ON

Convert: 9 meters = _______ inches when 1 m = 39.37 in

Mathematical Equivalence

ON

Convert: 4 feet = _____ centimeters

when 1 inch = 2.54 centimeters

Mathematical Equivalence

ON

Using the conversion factor of 1 inch = 2.54 centimeters, Max practiced converting measurements. Below are his answers. Which TWO did he not convert correctly?

A wire is cut in two in the ratio 9 : 6. Which ratio could represents the amount of wire cut?

• 36 inches and 24 inches

• 18 inches and 48 inches

• 30 inches and 30 inches

• 48 inches and 12 inches

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7

• 7 to 5

• 5 to 12

• 7 to 12

A cookie recipe calls for 3 cups of flour and 2 cups of chocolate chips. What is the ratio of chocolate chips to flour?

• 3 : 2

• 3 to 2

• 6 : 4

• 2 : 3

The ratio of girls to boys at basketball practice is 2:3. If there are 12 girls at practice then how many boys are there?

• 15

• 18

• 20

• 21

Lydia walked 4.42 meters. How far did she walk in feet?

(1 foot = 0.914 meters)

Round to the nearest tenth if necessary.

• 14.5

• 0.2

• 4.0

• 4.8