Lesson Worksheet: Estimating Capacity: Customary Units Mathematics • 4th Grade

In this worksheet, we will practice how to measure and estimate capacity using customary units of capacity and how to use this skill to solve real-world problems.


Scarlett wants to measure the capacity of a bucket as accurately as she can. Should she measure its capacity to the nearest gallon, quart, pint, cup, or fluid ounce?

  • Ato the nearest quart
  • Bto the nearest pint
  • Cto the nearest cup
  • Dto the nearest fluid ounce
  • Eto the nearest gallon


Matthew showers for 10 minutes. Has he used about 80 cups or 150 gallons of water?


Jacob wants to know how much water he uses when he takes a 10 minutes shower. Would it be most appropriate to measure the amount of water in fluid ounces, cups, or gallons?

  • Afluid ounces
  • Bgallons
  • Ccups


What is the most appropriate estimation of the capacity of a water heater?

Water heater
  • A45 cups
  • B45 gallons
  • C45 fluid ounces
  • D45 quarts
  • E45 pints


Chloe filled her car with a full tank of gas. Which of the following estimates is the most likely approximation for the amount of gas that Chloe bought?

  • A15 gallons
  • B30 pints
  • C15 cups
  • D90 quarts
  • E30 fluid ounces


Which of the following is the likely capacity of a standard drinking glass?


Pick the object whose capacity can be best estimated in gallons.

  • A
  • B
  • C


A teacher asks the students in his class whether the best estimation of the jar is 2 pints or 2 fluid ounces. Jackson says that the best estimation is 2 fluid ounces. David says that the best estimation for the capacity of the jar is 2 pints. Who is correct?

  • ADavid
  • BJackson

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