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basic 3 × 24 12 15 PO D advance 1 d 1 28 ÷ 42 Convert Between Measurement Systems You can multiply by fractions to convert between customary and metric units. The table below lists common customary and metric relationships. Type of Measure Length Weight/Mass Capacity Customary Metric 1 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) 1 pound (lb.) ≈ 453.6 grams (g) 1 pound (lb.) ≈ 0.4536 kilograms (kg) 1 ton (T) ≈ 907.2 kilograms (kg) 1 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) Ex. Convert 17.22 inches to centimeters. Round to the nearest hundredth if necessary. 2.54 cm Since 2.54 centimeters ≈ 1 inch, multiply by 1 in 17.22 in 1 × 2.54 cm 1 in cross cancel common units = 43.7388 cm 1 = 43.74 cm Ex. Convert 5 kilometers to miles. Round to the nearest hundredth if necessary. Since 1 mile ≈ 1.61 kilometers, multiply by 5 km 1 × 1 mi. 1.61 km cross cancel common units = 5 mi. 1.61 1 mi. 1.61 km = 3.11 mi. 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