Adding and Subtracting Fractions with Unlike Denominators

Add fractions with unlike denominators by finding a common denominator to solve a riddle about a ghost telling a lie.

Solve addition problems with unlike denominators using larger numbers to answer a riddle about a sheepdog and a tulip.

Subtract fractions with unlike denominators to solve a riddle about an orangutan's wife.

Complete subtraction problems with different denominators to solve a riddle about a two-headed dragon.

Solve a mix of addition and subtraction fraction problems with unlike denominators to answer a riddle about two keyboards.