6th grade volume of rectangular prisms worksheets

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Volume worksheets for sixth grade keep the same labeled prisms and dimension lists but give one edge a half unit, like 4.5 in. Your child multiplies length times width times height and writes the exact decimal answer. Nothing needs rounding.

Free printable PDF worksheet, aligned to Common Core 6.G.A.2.

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The kind of problems you'll get

Find the volume of each prism. Show your work and include cubic units.

  1. Rectangular prism: 4 cm by 3 cm by 2 cm.

    Answer: 4 × 3 × 2 = 24 cm³.

Most problems on this sheet sit beside a picture, model or diagram, so this is the worked example the sheet itself prints. The answer key on page two prints the answer under every problem.

Every print pulls a fresh set of problems at this level, so a make-up test or a second sibling never gets the same sheet.

What's on a 6th grade sheet

The sample sheet above has 8 problems. This sheet is aligned to 6.G.A.2. The 5th grade sheet is aligned to 5.MD.C.5. This grade also prints prisms with a missing dimension, which 5th grade does not.

Every version prints on US Letter or A4, with its answer key after the problems.

How to teach this

The half-unit edge is the only new ingredient, so treat it calmly: 4.5 times 2 is just 9, and the rest of the multiplication rolls on as before. Encourage your child to multiply the two easiest numbers first. Pairing the .5 with an even number clears the decimal early. If decimals stall things, check that the layer idea survived the upgrade: half a unit of height means half a layer of cubes.

Watch for: Kids add the three dimensions instead of multiplying. Volume counts unit cubes layer by layer, so the three numbers multiply. Kids write square units on a volume answer. Filling space takes cubic units, so it's cu in, not sq in.

Common questions about 6th grade volume of rectangular prisms

How is this harder than the fifth grade sheet?
One edge is now a half unit, like 4.5 in, so the answer can be a decimal. The formula is unchanged (length times width times height), and every answer comes out exact.
Does my child need decimal multiplication first?
Only a little. Each problem has just one half-unit edge, and it pairs cleanly with the other numbers (4.5 times 2 is 9), so comfort with halves matters more than long decimal work.

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Aligned to Common Core 6.G.A.2. Reviewed by the One more sheet team. Content version 240, updated September 2026.

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