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Fraction Addition - Find Common Denominator - Mixed - One Changed Denominator

Level 2

This math topic focuses on practicing finding the lowest common denominator to add fractions with different denominators. These problems involve both simple and mixed fractions that require adjustment into equivalent fractions with a common denominator before addition can proceed. This skill is essential for effectively solving fraction addition problems and is part of a broader introduction to fraction addition and subtraction. The questions provide a variety of fraction pairs, and students are tasked with selecting the correct lowest common denominator from multiple choices.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Add. Find Common Denominator - Mixed - One Changed Denominator

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What lowest common denominator would you use to add these fractions?

112+341\frac{1}{2} + \frac{3}{4}

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Fraction Addition - Find Common Denominator - Mixed - One Changed Denominator Worksheet

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Math worksheet on 'Fraction Addition - Find Common Denominator - Mixed - One Changed Denominator (Level 2)'. Part of a broader unit on 'Fraction Addition and Subtraction, Mixed - Intro' Learn online: app.mobius.academy/math/units/fractions_addition_and_subtraction_mixed_intro/
1
What lowest common denominator would you use to add these fractions?
A LaTex expression showing 21 over 3 + 18 over 9
a
14
b
18
c
9
d
3
e
1
f
7
2
What lowest common denominator would you use to add these fractions?
A LaTex expression showing 21 over 2 + 13 over 6
a
5
b
7
c
2
d
14
e
15
f
6
3
What lowest common denominator would you use to add these fractions?
A LaTex expression showing 21 over 2 + 3 over 6
a
3
b
6
c
13
d
11
e
14
f
1
4
What lowest common denominator would you use to add these fractions?
A LaTex expression showing 21 over 2 + 12 over 6
a
15
b
7
c
6
d
3
e
1
f
9
5
What lowest common denominator would you use to add these fractions?
A LaTex expression showing 31 over 2 + 13 over 6
a
4
b
6
c
10
d
13
e
9
f
2
6
What lowest common denominator would you use to add these fractions?
A LaTex expression showing 31 over 2 + 3 over 6
a
3
b
12
c
5
d
6
e
10
f
11
7
What lowest common denominator would you use to add these fractions?
A LaTex expression showing 11 over 2 + 4 over 6
a
3
b
4
c
7
d
8
e
6
f
5