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Lessons for Grade 4
Common Core For Grade 4
Examples, solutions, and 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
NYS Common Core Grade 4 Module 5, Lesson 17
Worksheets 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 =
Lesson 17 Problem Set
1. Use the following three fractions to write two subtraction and two addition number sentences.
a. 8/5, 2/5, 10/5
b. 15/8, 7/8, 8/8
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.
a. 1 - 3/4
b. 1 - 8/10
c. 1 - 3/5
d. 1 - 5/8
e. 1 2/10 - 7/10
f. 1 1/5 - 3/5
3. Find the difference in two ways. Use number bonds to decompose the whole. Part (a) has been
completed for you.
a. 1 2/5 - 4/5
b. 1 3/6 - 4/6
c. 1 6/8 - 7/8
d. 1 1/10 - 7/10
e. 1 3/12 - 6/12
Lesson 17 Homework
1. Use the following three fractions to write two subtraction and two addition number sentences.
a. 5/6, 4/6, 9/6
b. 5/9, 13/9, 8/9
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.
a. 1 - 5/8
b. 1 - 2/5
c. 1 3/6 - 5/6
d. 1 - 1/4
e. 1 1/3 - 2/3
f. 1 1/5 - 2/5
3. Find the difference in two ways. Use number bonds to decompose the whole. Part (a) has been
completed for you.
a. 1 2/5 - 4/5
b. 1 3/8 - 7/8
c. 1 1/4 - 3/4
d. 1 2/7 - 5/7
e. 1 3/10 - 7/10
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