What Capacity Worksheet

Capacity is the amount of liquid a container can hold, and it is one of the first measurement ideas that helps children make sense of the world around them. This What Capacity Worksheet gives 3rd Grade students focused practice choosing sensible units, reading a measuring scale, and thinking carefully about how much liquid a real container holds. Students learn that a medicine spoon holds only a few milliliters while a bathtub holds hundreds of liters, and that estimating well is a skill they can use every single day at home and at school.

This 3rd grade measurement worksheet moves students from estimating to measuring to solving. In Part A, children look at six familiar containers and fill in the bubble beside the better estimate of what each one holds. In Part B, they read the scale on four different measuring cups and write the amount of liquid shown, including cups where the liquid stops halfway between two labeled marks. In Part C, students solve two multi-step word problems that ask them to add liquid amounts, convert between liters and milliliters, and work with cups and quarts. Use it as morning work, as independent practice after a hands-on pouring lesson, as a math center activity, or as a quick review before a measurement assessment.

What’s Included

• 1 print-ready PDF worksheet
• Answer key
• 6 estimate-the-unit picture questions, 4 read-the-scale measuring cups, and 2 multi-step word problems

This What Capacity Worksheet helps children learn capacity in three ways. First, the picture questions build number sense about units, so students stop guessing and start reasoning about whether milliliters or liters make sense. Second, reading the marked measuring cups teaches students to interpret a scale, including the halfway marks that show up on real containers and on test questions. Third, the word problems ask students to combine amounts and convert between units, which turns measurement from a vocabulary lesson into real problem solving.

Teachers and parents can extend this skill away from the page. Set out a bucket, a pitcher, a mug, and a spoon, and let children order them from smallest to largest capacity before checking with water. Fill a liter bottle using a 250 milliliter cup and count how many cups it takes. Cook together and read the measuring cup out loud at every step. Send children on a kitchen hunt for labels that show milliliters and liters, then sort the containers into groups. Each of these games gives children another chance to see that capacity is something they can measure, compare, and talk about.

Related Resources

• Choosing Milliliter or Liter Worksheet
• Metric Liquid Volume Worksheet
• Cup Pint Quart Gallon Worksheet
• Volume Song by Have Fun Teaching