Converting Units of Weight/Mass for 4th Grade
Weight and mass conversions work the same way in both systems, but the numbers differ: customary units use sixteen ounces to a pound and two thousand pounds to a ton, while metric units scale by powers of ten. The examples below cover each, with practice.
DETAILED EXPLANATION
Customary weight: ounces (oz), pounds (lb). 16 oz = 1 lb. Metric mass: grams (g), kilograms (kg). 1,000 g = 1 kg. Convert by multiplying or dividing.
WORKED EXAMPLES WITH STEP BY STEP SOLUTIONS
Example 1
How many ounces in 2 pounds?
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Solutions:
Step 1: Apply the concept from the lesson above.
Step 2: Carry out the operation or reasoning.
Answer: 2 lb × 16 oz/lb = 32 oz.
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