 # Add and Subtract more than Two Fractions

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Lesson Plans and Worksheets for Grade 4
Lesson Plans and Worksheets for all Grades

Examples, solutions, and videos to help Grade 4 students learn how add and subtract more than two fractions.

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

### NYS Common Core Grade 4 Module 5, Lessons 18

Grade 4, Module 5, Lesson 18 Worksheets

Lesson 18 Concept Development

Solve each of the following in three different ways
Problem E:
5/8 + 4/8 + 1/8 =
Problem F:
1 1/5 - 2/5 - 3/5 = Lesson 18 Problem Set

1. Show one way to solve each problem. Express sums and differences as a mixed number when possible. Use number bonds when it helps you. Part (a) is partially completed.
a. 2/5 + 3/5 + 1/5
b. 3/6 + 1/6 + 3/6
c. 5/7 + 7/7 + 2/7
d. 7/8 - 3/8 - 1/8
e. 7/9 + 1/9 + 4/9
f. 4/10 + 11/10 + 5/10
g. 1 - 3/12 - 4/12
h. 1 2/3 - 1/3 - 1/3
i. 10/12 + 5/12 + 2/12 + 7/12

2. Monica and Stuart used different strategies to solve 5/8 + 2/8 + 5/8. Whose strategy do you like best? Why?

3. You gave one solution for each part of Problem 1. Now, for each problem indicated below, give a different solution method.
c. 5/7 + 7/7 + 2/7
f. 4/10 + 11/10 + 5/10
g. 1 - 3/12 - 4/12

Lesson 18 Homework

1. Show one way to solve each problem. Express sums and differences as a mixed number when possible. Use number bonds when it helps you. Part (a) is partially completed.
a. 2/5 + 3/5 + 1/5
b. 5/8 + 5/8 + 3/8
c. 4/6 + 6/6 + 1/6
d. 1 2/12 - 2/12 - 2/12
e. 5/7 + 1/7 + 4/7
f. 4/10 + 7/10 + 9/10
g. 1 - 3/12 - 4/12
h. 1 2/3 - 1/3 - 1/3
i. 10/12 + 5/12 + 2/12 + 7/12

2. Bonnie used different strategies to solve 5/8 + 2/8 + 5/8. Whose strategy do you like best? Why?

3. You gave one solution for each part of Problem 1. Now, for each problem indicated below, give a different solution method.
c. 5/7 + 7/7 + 2/7
f. 4/10 + 11/10 + 5/10
g. 1 - 3/12 - 4/12

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