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4th grade · Math · Unit 13 of 15

Feet, Pounds & Gallons

Convert units of measure

What your child practices

Knowing how US customary units compare (12 inches in a foot, 16 ounces in a pound, 4 quarts in a gallon) as well as metric and time units, and converting a larger unit to a smaller one.

Arizona Academic Standards learning standard: 4.MD.A.1; 4.MD.A.2 · knowing the relative sizes of measurement units, converting larger units to smaller ones, and solving measurement problems

How we explain it

Children can open this short lesson before they practice.

  1. 1 foot = 12 inches. 1 yard = 3 feet. 1 pound = 16 ounces.
  2. 1 gallon = 4 quarts. 1 quart = 2 pints. 1 pint = 2 cups.
  3. Big unit to small unit: multiply.

Example: How many ounces are in 3 pounds? 1 pound = 16 ounces. 3 × 16 = 48. Answer: 48 ounces

Feet, Pounds & Gallons in Arizona

In the Arizona Academic Standards, this is unit 13 of 15 in 4th grade Math, after Prime & Composite and before Line Plots & Data.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: Arizona Department of Education

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    A cooler holds 2 gallons of lemonade. 1 quarts are poured out. How many quarts are left?

    • 7
    • 9
    • 6
    • 1
    • 5

  2. Question 2

    How many meters are in 3 kilometers?

    • 2000
    • 3000
    • 1003
    • 30,000
    • 4000

  3. Question 3

    How many ounces is 2 pounds 4 ounces?

    • 6
    • 36
    • 24
    • 52
    • 32

  4. Question 4

    Which is more: 3 feet or 30 inches?

    • 3 feet
    • 30 inches

  5. Question 5

    What number goes where the ? is?

    Pints and cups
    pintscups
    48
    510
    612
    7?
    • 9
    • 12
    • 10
    • 15
    • 14

  6. Question 6

    Which holds the most?

    • 1 cup
    • 1 gallon
    • 1 quart

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