Free printable worksheets with answer keys. Pick a level, preview the questions, then open the sheet to swap or delete any single question.
Easy: One denominator is a multiple of the other
Rewrite the fractions with a common denominator, usually the least common multiple of the denominators, then add or subtract the numerators.
Add or subtract. Write each answer in simplest form.
Tip: tick “Step-by-step answer key” in the generator to print each step for marking.
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