Florida B.E.S.T. MA.5.FR.2.1

Math5th GradePerform operations with fractions.

The Standard

Add and subtract fractions with unlike denominators, including mixed numbers and fractions greater than 1, with procedural reliability.

Florida B.E.S.T. Standards for Mathematics

Teacher's field guide

What Students Need to Do: Students rewrite fractions and mixed numbers using common denominators, then add or subtract accurately. They regroup when needed and express answers in simplest form.
What Mastery Looks Like: Students consistently find a useful common denominator and rewrite each fraction correctly. They accurately add or subtract, regroup mixed numbers when needed, and simplify the result.
Common Misconceptions: Students may add or subtract both numerators and denominators. They may choose a common denominator but fail to create equivalent fractions, or regroup one whole incorrectly when subtracting mixed numbers.
How to Assess It: Give this exit ticket: Solve 4 1/3 minus 2 5/6, show each step, and write the answer in simplest form.

Lesson moves

Use fraction strips to model 2 1/3 plus 1 3/4, then record each equivalent fraction and the final sum.
Ask students to explain why 2/3 plus 1/4 cannot equal 3/7 and show a correct method.
Play Common Denominator Match by pairing fraction cards with denominator cards, then solving the resulting addition or subtraction problem.
Give a recipe adjustment task where students combine and compare mixed-number amounts of flour, sugar, or water.

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$Preview of the MA.5.FR.2.1 printable worksheet$

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