Subtracting Fractions with Like Denominators
Use this worksheet to teach subtracting fractions with like denominators. Work through one example with your student before assigning independent practice.
Teaching notes for parents and teachers
Use this worksheet to teach subtracting fractions with like denominators. Work through one example with your student before assigning independent practice.
How to teach it
Keep the same reference whole and show why the pieces must be the same size. Model a common denominator, then subtract the numerators. For mixed numbers, demonstrate conversion to improper fractions when helpful.
Examples to explain together
Use denominator 10: 5/10 − 2/10. Then simplify.
Use denominator 4: 3/4 − 2/4. Then simplify.
If your student needs help
If your student reverses the subtraction or changes only a numerator, return to the total and the part being removed in the model.
Check understanding
Ask your student to add the difference to the fraction subtracted. Compare the result with the starting amount using equivalent fractions.
Make a practice set
Select the worksheet, answer key, or both. When both are selected, the answer key prints after the questions. Keep it separate if you want your student to work independently.
After your student finishes
Review one problem together. Ask your student to explain the steps, then use the answer key to check the result. Revisit a difficult step before assigning another set.
About Subtracting Fractions with Like Denominators
Practice subtracting fractions with like denominators. Focus on accuracy before speed. Use the space provided to record the steps you need.
How to practice
Use a common denominator so both fractions name the same-sized parts. Subtract the numerators in the stated order and keep that common denominator. With mixed numbers, you can first convert to improper fractions. Simplify the difference; if it is greater than one, read the equivalent improper and mixed forms together.
Examples to explain together
Use denominator 10: 5/10 − 2/10. Then simplify.
Use denominator 4: 3/4 − 2/4. Then simplify.
If your student needs help
Keep the subtraction order. Subtracting denominators or changing only a numerator does not preserve the original quantities.
Check understanding
Add the difference to the fraction subtracted. Simplify or find a common denominator to compare it with the starting amount.
Before independent practice
Work through one example together. Ask the student to explain one step, then try a few questions independently. Review the cause of an error before repeating the calculation. Compare the student’s written steps with the answer key where worked steps are provided; a correct answer alone does not show which strategy was used.