Equivalent Fractions

These free printable equivalent fractions worksheets are ideal for 4th graders building fluency with equivalence. Problems ask for a missing numerator or a missing denominator, so students must reason about the scale factor from either direction - the exact skill that unlike-denominator addition depends on.

How to Solve Fractions - Concepts

Find the scale factor first: compare the two parts you can see. If the numerators are 5 and 20, the fraction was scaled by 4, so multiply the denominator by 4 as well. Whatever multiplies the top must multiply the bottom - that is what keeps two fractions equivalent.

You can view the preview of this worksheet below, or download the full high-resolution PDF along with the answer key for easy grading.