Add unlike denominators

Unlike denominators · Numbers & Operations

Simplify, find equivalent fractions, compare, then add and subtract unlike denominators.

Different denominators: find a common one first.

This is step 4 of unit 2, “Unlike denominators”, in Stage 6: Factors, common denominators, multiplying fractions and decimals, area (ages 12). A round has 10 problems; 90% or better earns three stars. Everything is free with no sign-up, and your stars and XP are saved on this device.