Grade 5 · Math · Lesson 17

Metric and Customary Conversions

Measurements come in two big systems. The metric system uses meters, grams, and liters and converts by powers of 10. The customary system uses inches, pounds, and gallons and uses memorized conversion factors. Knowing both systems lets you read recipes, weather reports, and science labels anywhere in the world.

What this lesson teaches

1Identify common metric units of length, mass, and capacity
2Identify common customary units of length, weight, and capacity
3Convert between metric units by multiplying or dividing by powers of 10
4Convert between customary units using the standard conversion factors

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