Printable Customary Units Worksheets

Customary measurement worksheets teach elementary students the US standard system of inches, feet, yards, miles, pounds, and ounces. These printable sheets feature conversion tables and full answer keys.

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Structured, printable skill sheets with step-by-step guidance for Customary Units.

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About Customary Units

What this skill is

The US Customary system is the traditional measurement framework used in the United States, based on units like 12 inches per foot, 3 feet per yard, 16 ounces per pound, and 4 quarts per gallon.

When children learn it

Customary measurement units are taught and converted across 2nd through 5th grade (CCSS 4.MD.A.1, 5.MD.A.1).

Teaching Tips

  • Teach the rule: "Big to small, multiply them all! Small to big, divide like a pig!". When converting from large units (feet) to small units (inches), multiply (3 ft x 12 = 36 in).

Common Mistakes

  • Confusing conversion factors across categories (using 12 instead of 16 for ounces in a pound).
  • Dividing when they should multiply, or vice versa.
  • Struggling with multi-step conversions like yards to inches.