Videos to help Grade 4 students learn how to use visual models to add and subtract two fractions with the
same units, including subtracting from one whole.

Common Core Standards: 4.NF.3a,
4.NF.3d,
4.NF.1,
4.MD.2

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Lessons for Grade 4

Common Core For Grade 4

Lesson 17 Concept Development

Problem 1: Subtract a fraction from one whole.

1 - 3/8 =

Problem 2: Subtract a fraction from a number between 1 and 2.

1 1/5 - 2/5 =

1. Use the following three fractions to write two subtraction and two addition number sentences.

2. Solve. Model each subtraction problem with a number line, and solve by both counting up and subtracting. Part (a) has been solved for you.

3. Find the difference in two ways. Use number bonds to decompose the whole. Part (a) has been completed for you.

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