Ten fraction addition problems with unlike denominators, plus an answer key with every sum in simplest form.
Scroll to see all 10 problems and the answer key on its own page. Printing includes every page.
Students find a common denominator, add, and simplify. The generator builds each problem from a known reduced answer, so the key is exact and every problem simplifies cleanly — no ugly leftovers that make students think they went wrong when they didn't.
Find a common denominator before adding or subtracting. Keep that denominator while combining the numerators, then simplify the result. Use the original fractions to estimate whether the answer is reasonable.
Students shaky on the skill itself? Send them to the free lesson: Adding Fractions — explained step by step.
Want this in multiple choice? Harder numbers? 30 versions?
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