POD 3

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basic advanced182 4÷ 1

2

Convert Between Measurement Systems

Type of Measure Customary Metric

Length1 inch (in.) ≈ 2.54 centimeters (cm)1 foot (ft.) ≈ 0.30 meter (m)1 yard (yd) ≈ 0.91 meter (m)1 mile ≈ 1.61 kilometers (km)

Weight/Mass1 pound (lb.) ≈ 453.6 grams (g)1 pound (lb.) ≈ 0.4536 kilograms (kg)1 ton (T) ≈ 907.2 kilograms (kg)

Capacity1 cup (c) ≈ 236.59 milliliters (mL)1 pint (pt) ≈ 473.18 milliliters (mL)1 quart (qt) ≈ 946.35 milliliters (mL)1 gallon (gal) ≈ 3.79 liters (L)

You can multiply by fractions to convert between customary and metric units. The table below lists common customary and metric relationships.

Ex.

Convert 17.22 inches to centimeters. Round to the nearest hundredth if necessary.

Since 2.54 centimeters ≈ 1 inch, multiply by 2.54 cm 1 in

17.22 in 1 ×

2.54 cm 1 in =

43.7388 cm 1 43.74 cm=

cross cancel common units

Ex.

Convert 5 kilometers to miles. Round to the nearest hundredth if necessary.

Since 1 mile ≈ 1.61 kilometers, multiply by 1 mi. 1.61 km

5 km 1 ×

1 mi.1.61 km =

5 mi.1.61 3.11 mi.=

cross cancel common units

Whiteboard time

What is the relationship between feet and meters? Write as a ratio.

1 ft.30m

Whiteboard time

What is the relationship between cups and milliliters? Write as a ratio.

1 c 236.59mL

Whiteboard time

6 yd ≈ _____ m

5.46 m

Whiteboard time

1.6 cm ≈ _____ in

0.63 in

Whiteboard time

17 m ≈ _____ yd

18.68 yd