Missing factors worksheets

A missing factor turns a times-table fact into a division question without ever printing a division sign. These free printable worksheets hide one of the two factors up to 12 × 12, so a child has to work backwards from the product.

Missing factors
Missing factors worksheet — Factors to 12, free printable with answer key

The answer key prints on a separate page.

What's on this sheet

7 × __ = 42 is 42 ÷ 7 wearing different clothes, and meeting it in this form first is what makes division feel like something already known rather than a new operation to learn. It is also exactly what third-grade standards ask for by name: determine the unknown number in a multiplication equation.

Why this sheet works

Either factor can be the hidden one, so a child cannot settle into always dividing by the number on the left. Reading the sentence properly — which number is known, which one is the product — is half of what the page trains, and it is the half that transfers to algebra.