Grade 4 Add & Subtract Fractions Quiz

A free Grade 4 Add & Subtract Fractions quiz. Play without signing up; sign in to save your score.

Grade 4 gradeMath subjectFree quiz

Fourth-grade adding and subtracting fractions uses like denominators: the same-size pieces. 3/8 + 2/8 is 5/8 because you add the number of eighths and keep the eighths. Students also subtract, as in 7/10 − 3/10, and write mixed numbers when the sum is more than one whole.

The Grade 4 Add & Subtract Fractions quiz is free to play without signing up. Sign in to save scores. Classic has a timer; Trivi gives three hearts; Learn is untimed with no score.

What you practice

These are the Grade 4 Add & Subtract Fractions skills this quiz is built around.

Add fractions with the same denominator by adding numerators only.
Subtract fractions with the same denominator by subtracting numerators only.
Rewrite a sum such as 5/4 as 1 1/4 when it is greater than one.

A useful tip

Keep the denominator. 1/5 + 2/5 is 3/5, not 3/10. The denominator names the size of the piece; only the numerator counts how many pieces you have.

Frequently asked questions

What does Grade 4 Add & Subtract Fractions practice?

Practice includes: Add fractions with the same denominator by adding numerators only; Subtract fractions with the same denominator by subtracting numerators only; Rewrite a sum such as 5/4 as 1 1/4 when it is greater than one.

Is the Grade 4 Add & Subtract Fractions quiz free?

Yes. This quiz is free to play without signing up. Sign in to save your scores and progress.

What game modes can I use?

Classic has a timer; Trivi gives three hearts; Learn is untimed with no score.