Florida Grade 4 Math · Algebraic Reasoning

MA.4.AR.1.2: Fraction Addition and Subtraction Word Problems

What this Grade 4 benchmark means, worked examples, common mistakes, and a free printable worksheet.

Created by a Florida mom · Published by Tropical Learning LLC

What Is Benchmark MA.4.AR.1.2?

Students solve real-world problems that add and subtract fractions with like denominators, including mixed numbers and fractions greater than one. They also write stories to match an equation.

The fractions in a problem must refer to the same whole, like the same pizza or the same mile. Answers do not need to be simplified.

Official benchmarkSolve real-world problems involving addition and subtraction of fractions with like denominators, including mixed numbers and fractions greater than one.

On the FAST test: part of the Grade 4 reporting category Number Sense and Operations with Fractions and Decimals, which is about 31–37% of the test.

Worked Examples

Worked Example 1

Adding Distances

Maya ran 234 miles on Monday and 124 miles on Tuesday. How far did she run in all?
  1. 1Add the wholes: 2 + 1 = 3
  2. 2Add the fractions: 34 + 24 = 54, which is 114
  3. 33 + 114 = 414
Answer: 414 miles

Worked Example 2

Finding What Is Left

A ribbon is 1112 yard long. Lucy uses 512 yard. How much is left?
  1. 1Take away: 1112 − 512 = 612
Answer: 612 yard

Common Mistakes to Watch For

Subtracting without regrouping

Wrong:518 − 238 = 328

18 is less than 38, so regroup: 498 − 238 = 268.

Writing a story that doesn't match the equation

Wrong:For 134 + 314: "Megan had 314 cups of flour and used 134 cups."

That story is subtraction. An addition story joins amounts: "Megan used 134 cups of flour for one pie and 314 cups for another."

Helpful Math Tip

Draw a number line or bar model for the story. Seeing the amounts side by side shows whether to add or subtract.

Related Grade 4 Skills

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Independent Educational Platform. FastChomp is published by Tropical Learning LLC and is not affiliated with, sponsored by, or endorsed by the Florida Department of Education. FAST and Star assessment names are referenced for informational purposes only. FastChomp practice questions are original educational materials, not official Florida FAST assessment questions.