Volume
Find the volume of each box. All lengths are in centimetres.
Free · Grade 5 · Edges to 20 cm
Working on volume of a rectangular prism? Print this sheet as it is, or change the level and questions first.

The answer key prints on a separate page.
The composite sheets are the standard's own next sentence rather than a variation someone invented: the volume of a solid made of two non-overlapping prisms is the sum of their volumes. It is the step that turns a formula into a method, so it sits alongside the plain boxes rather than in a separate place.
The two prisms in a composite figure share a depth. That is not a simplification for the drawing's sake — a step that is narrower front-to-back as well as shorter changes two things at once, and the addition is what is being practised.