# Find common units to compare two Fractions

Videos to help Grade 4 students learn how to find common units or number of units to compare two fractions.

Common Core Standards: 4.NF.2

### NYS Common Core Grade 4 Module 5, Lesson 14

Lesson 14 Concept Development

Problem 1: Reason about fraction size using unit language.
Problem 2: Compare fractions with related numerators.
Problem 3: Compare fractions having related denominators where one denominator is a factor of the other.
Lesson 14 Problem Set 1

1. Compare the pairs of fractions by reasoning about the size of the units. Use >, <, or =.
a. 1 fourth _____ 1 fifth
b. 3 fourths _____ 3 fifths
c. 1 tenth _____ 1 twelfth
d. 7 tenths _____ 7 twelfths

Lesson 14 Problem Set 2

2. Compare by reasoning about the following pairs of fractions with the same or related numerators. Use >, <, or =. Explain your thinking using words, pictures, or numbers. Problem 2(b) has been done for you.
a. 3/5 ____ 3/4
b. 2/5 < 4/9
c. 7/11 ___ 7/13
d. 6/7 ___ 12/15
Lesson 14 Problem Set 3

3. Draw two tape diagrams to model each pair of the following fractions with related denominators. Use >, <, or = to compare.
a. 2/3 ___ 5/6
b. 3/4 ___ 7/8
c. 1 3/4 ___ 1 7/12

Lesson 14 Problem Set 4

4. Draw one number line to model each pair of fractions with related denominators. Use >, <, or = to compare.
a. 2/3 ___ 5/6
b. 3/8 ___ 1/4
c. 2/6 ___ 5/12
d. 8/9 ___ 2/3
Lesson 14 Homework

1. Compare the pairs of fractions by reasoning about the size of the units. Use >, <, or =.
a. 1 third _____ 1 sixth b. 2 halves _____ 2 thirds
c. 2 fourths _____ 2 sixths d. 5 eighths _____ 5 tenths
2. Compare by reasoning about the following pairs of fractions with the same or related numerators. Use >, <, or =. Explain your thinking using words, pictures, or numbers. Problem 2(b) has been done for you.
3. Draw two tape diagrams to model each pair of the following fractions with related denominators. Use >, <, or = to compare.