This worksheet helps students practice converting between metric and US customary units like liters, gallons, meters, and feet.

To solve these conversion problems, we need to use standard conversion factors between metric and US units. Here are the common ones we’ll use:

- 1 liter (L) ≈ 0.264172 gallons (gal)
- 1 gallon (gal) ≈ 3.78541 liters (L)
- 1 meter (m) ≈ 3.28084 feet (ft)
- 1 foot (ft) ≈ 0.3048 meters (m)
- 1 centimeter (cm) ≈ 0.393701 inches (in)
- 1 inch (in) ≈ 2.54 centimeters (cm)
- 1 kilometer (km) ≈ 0.621371 miles (mi)
- 1 mile (mi) ≈ 1.60934 kilometers (km)
- 1 gram (g) ≈ 0.035274 ounces (oz)
- 1 ounce (oz) ≈ 28.3495 grams (g)
- 1 kilogram (kg) ≈ 2.20462 pounds (lb)
- 1 pound (lb) ≈ 0.453592 kilograms (kg)
- 1 milliliter (mL) = 0.001 liters (L), and since 1 L ≈ 1.05669 quarts (qt), then 1 mL ≈ 0.00105669 qt
- 1 quart (qt) ≈ 946.353 milliliters (mL)

Now let’s go step by step for each problem.

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1) 5 L = ___ gal

Multiply 5 by 0.264172 → 5 × 0.264172 = 1.32086

→ Round to 2 decimal places: 1.32 gal

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2) 5 gal = ___ L

Multiply 5 by 3.78541 → 5 × 3.78541 = 18.92705

→ Round to 2 decimal places: 18.93 L

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3) 30.5 m = ___ ft

Multiply 30.5 by 3.28084 → 30.5 × 3.28084 = 100.06562

→ Round to 2 decimal places: 100.07 ft

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4) 75 cm = ___ in

Multiply 75 by 0.393701 → 75 × 0.393701 = 29.527575

→ Round to 2 decimal places: 29.53 in

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5) 8.5 in = ___ cm

Multiply 8.5 by 2.54 → 8.5 × 2.54 = 21.59

→ 21.59 cm

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6) 16.9 km = ___ mi

Multiply 16.9 by 0.621371 → 16.9 × 0.621371 = 10.5011699

→ Round to 2 decimal places: 10.50 mi

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7) 27 g = ___ oz

Multiply 27 by 0.035274 → 27 × 0.035274 = 0.952398

→ Round to 2 decimal places: 0.95 oz

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8) 20 kg = ___ lb

Multiply 20 by 2.20462 → 20 × 2.20462 = 44.0924

→ Round to 2 decimal places: 44.09 lb

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9) 3800 mL = ___ qt

First, convert mL to L: 3800 mL = 3.8 L

Then multiply by 1.05669 → 3.8 × 1.05669 = 4.015422

→ Round to 2 decimal places: 4.02 qt

Alternatively, directly: 3800 × 0.00105669 = 4.015422 → same result.

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10) 1.3 qt = ___ mL

Multiply 1.3 by 946.353 → 1.3 × 946.353 = 1230.2589

→ Round to 2 decimal places: 1230.26 mL

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11) 250 ft = ___ m

Multiply 250 by 0.3048 → 250 × 0.3048 = 76.2

→ 76.20 m (to keep 2 decimals)

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12) 180 in = ___ cm

Multiply 180 by 2.54 → 180 × 2.54 = 457.2

→ 457.20 cm

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13) 100 lb = ___ kg

Multiply 100 by 0.453592 → 100 × 0.453592 = 45.3592

→ Round to 2 decimal places: 45.36 kg

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14) 9.56 oz = ___ g

Multiply 9.56 by 28.3495 → 9.56 × 28.3495 = 271.02122

→ Round to 2 decimal places: 271.02 g

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15) 1.16 mi = ___ km

Multiply 1.16 by 1.60934 → 1.16 × 1.60934 = 1.8668344

→ Round to 2 decimal places: 1.87 km

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16) 291.5 L = ___ gal

Multiply 291.5 by 0.264172 → 291.5 × 0.264172 = 77.006138

→ Round to 2 decimal places: 77.01 gal

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17) 10 m = ___ ft

Multiply 10 by 3.28084 → 10 × 3.28084 = 32.8084

→ Round to 2 decimal places: 32.81 ft

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18) 16.1 km = ___ mi

Multiply 16.1 by 0.621371 → 16.1 × 0.621371 = 10.0040731

→ Round to 2 decimal places: 10.00 mi

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19) 283.5 g = ___ oz

Multiply 283.5 by 0.035274 → 283.5 × 0.035274 = 10.000179

→ Round to 2 decimal places: 10.00 oz

*(Note: This is very close to exactly 10 oz — likely designed that way!)*

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20) 950 mL = ___ qt

Multiply 950 by 0.00105669 → 950 × 0.00105669 = 1.0038555

→ Round to 2 decimal places: 1.00 qt

*(Again, very close to 1 quart — probably intentional.)*

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Final Answers:

1) 1.32
2) 18.93
3) 100.07
4) 29.53
5) 21.59
6) 10.50
7) 0.95
8) 44.09
9) 4.02
10) 1230.26
11) 76.20
12) 457.20
13) 45.36
14) 271.02
15) 1.87
16) 77.01
17) 32.81
18) 10.00
19) 10.00
20) 1.00