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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.

Oregon State Standards learning standard: 4.GM.B.4; 4.GM.B.5 · 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

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

    Which holds the most?

    • 1 gallon
    • 1 cup
    • 1 quart

  2. Question 2

    What number goes where the ? is?

    Minutes and seconds
    minutesseconds
    3180
    4240
    5300
    6?
    • 540
    • 361
    • 300
    • 66
    • 360

  3. Question 3

    Which is more: 2 gallons or 10 quarts?

    • 2 gallons
    • 10 quarts

  4. Question 4

    How many ounces is 6 pounds 9 ounces?

    • 96
    • 121
    • 15
    • 105
    • 69

  5. Question 5

    A cooler holds 2 gallons of lemonade. 4 quarts are poured out. How many quarts are left?

    • 4
    • 3
    • 12
    • 5
    • 6

  6. Question 6

    How many centimeters are in 7 meters?

    • 600
    • 800
    • 107
    • 700
    • 7000

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