## Adding Fractions using Doughnuts

STANDARDS CCSS.MATH.CONTENT.4.NF.B.3Understand a fraction a/b with a > 1 as a sum of fractions 1/b. CCSS.MATH.CONTENT.4.NF.B.3.CAdd and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction. LESSON TIME 20-30 minutes SUMMARY This lesson for Grades 4-5 uses doughnuts to…

## Fraction word problems involving time: Example

Today’s post features another fraction problem contributed by a middle school student. This one teaches equivalent fractions and common denominators.