# Add and Multiply Unit Fractions

Videos, solutions, and examples to help Grade 4 students learn how to add and multiply unit fractions to build fractions greater than 1 using visual models.

Common Core Standards: 4.NF.1, 4.NF.2, 4.NF.3, 4.NBT.6, 4.NF.4a, 4.MD.4

Related Topics:
Lesson Plans and Worksheets for Grade 4
Lesson Plans and Worksheets for all Grades
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Common Core For Grade 4

### NYS Common Core Grade 4, Module 5, Lessons 23

Lesson 23 Concept Development

Problem 1: Multiply a whole number times a unit fraction.
Problem 2: Multiply a whole number times a unit fraction using the associative property.
Problem 3: Express the product of a whole number times a unit fraction as a mixed number.
Lesson 23 Problem Set 1 & 2

1. Circle any fractions that are equivalent to a whole number. Record the whole number below the fraction.
a. Count by 1 thirds. Start at 0 thirds. End at 6 thirds.
b. Count by 1 halves. Start at 0 halves. End at 8 halves.
2. Use parentheses to show how to make ones in the following number sentence. Lesson 23 Problem Set 3

3. Multiply, as shown below. Draw a number line to support your answer. Lesson 23 Problem Set 4

4. Multiply, as shown below. Write the product as a mixed number. Draw a number line to support your answer.
a. 7 copies of 1 third
b. 7 copies of 1 half
c. 10 x 1/4

Lesson 23 Homework

1. Circle any fractions that are equivalent to a whole number. Record the whole number below the fraction.
a. Count by 1 fourths. Start at 0 fourths. Stop at 6 fourths.
b. Count by 1 sixths. Start at 0 sixths. Stop at 14 sixths.

2. Use parentheses to show how to make ones in the following number sentence.
1/3 + 1/3 + 1/3 + 1/3 + 1/3 + 1/3 + 1/3 + 1/3 + 1/3 + 1/3 + 1/3 + 1/3 = 4

3. Multiply, as shown below. Draw a number line to support your answer.
a. 6 × 1/3
b. 10 × 1/2
c. 8 × 1/4

4. Multiply, as shown below. Write the product as a mixed number. Draw a number line to support your answer.
a. 7 copies of 1 third
b. 7 copies of 1 fourth
c. 11 groups of 1 fifth
d. 7 × 1/2
e. 9 × 1/5

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