6th grade prisms with a missing dimension worksheets

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Prisms with a missing dimension worksheets for 6th grade print 6 problems per page. Find each requested measurement. Show your work and include units. Divide volume by the product of two known dimensions to find a rectangular prism’s missing dimension.

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

Each print is a different sheet with its own answer key. You don't need to sign up.

The kind of problems you'll get

Find each requested measurement. Show your work and include units.

  1. Volume: 60 cm³; length: 5 cm; width: 3 cm. Find the height.

    Answer: Height: 60 ÷ (5 × 3) = 4 cm.

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 each sheet

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

This sheet is one of the versions on the 6th grade volume of rectangular prisms page, with its own difficulty choices and its own answer key.

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.

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Aligned to Common Core 6.G.A.2. Reviewed by the One more sheet team. Content version 241, updated September 2026.

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