Cube numbers worksheets

A cube number is what you get by multiplying a number by itself three times. These free printable worksheets ask for the value of n³ for small whole numbers, which is the other half of knowing cube roots.

Kid stuck on one? You don’t just get the sheet.

Cube numbers
Cube numbers worksheet — Cubes to 1000, free printable with answer key

The answer key prints on a separate page.

What's on this sheet

11³ means 11 × 11 × 11 = 1331, and the little 3 says how many times the number appears rather than what to multiply by. Reading it as 11 × 3 is the classic first mistake and it is worth catching immediately, because the same misreading survives all the way into algebra.

Why this sheet works

The name comes from the shape. A cube with edges of 4 holds 4 × 4 × 4 = 64 unit cubes, which is where the word and the operation meet — and it is worth building one out of blocks once, because the picture makes the third multiplication feel necessary rather than arbitrary.

How this one works

One question from this sheet, worked through a step at a time.

11³

11³
11³=11 × 11 × 11
11³=11 × 11 × 11
11 × 11 × 11=1331
  1. The small number is a COUNT, not something to multiply by. 11³ does not mean 11 × 3 — it means how many 11s to multiply together.
  2. So write it out: 3 11s multiplied together — 11 × 11 × 11.
  3. Now it is just multiplying: 11 × 11 × 11 = 1331.