This math topic is centered on advanced fraction addition and subtraction with mixed numbers, specifically focusing on problems where students must find the missing value in equations involving fractions with changed denominators. These problems help develop skills in solving for unknown fractions in addition equations and require a good understanding of equivalent fractions, simplification, and common denominators. Each question presents multiple choices for the correct fraction to complete the equation correctly.

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

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Fraction Addition - Missing Value (Mixed) - Two Changed Denominators Worksheet

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Fraction Addition - Missing Value (Mixed) - Two Changed Denominators
1
Find the fraction that makes this equation correct
A LaTex expression showing 11 over 5 \;+\; \ sub \ sub \ _ = 18 over 15
a A LaTex expression showing 11 over 6
b A LaTex expression showing 1 over 3
c A LaTex expression showing 114 over 15
d A LaTex expression showing 121 over 25
e A LaTex expression showing 11 over 3
f A LaTex expression showing 13 over 5
2
Find the fraction that makes this equation correct
A LaTex expression showing 21 over 5 \;+\; \ sub \ sub \ _ = 27 over 10
a A LaTex expression showing 34 over 5
b A LaTex expression showing 1 over 2
c A LaTex expression showing 31 over 8
d A LaTex expression showing 22 over 5
e A LaTex expression showing 19 over 25
f A LaTex expression showing 2
3
Find the fraction that makes this equation correct
A LaTex expression showing 21 over 2 \;+\; \ sub \ sub \ _ = 25 over 6
a A LaTex expression showing 1 over 3
b A LaTex expression showing 32 over 3
c A LaTex expression showing 31 over 6
d A LaTex expression showing 31 over 3
e A LaTex expression showing 21 over 2
f A LaTex expression showing 21 over 3
4
Find the fraction that makes this equation correct
A LaTex expression showing 11 over 2 \;+\; \ sub \ sub \ _ = 17 over 10
a A LaTex expression showing 2
b A LaTex expression showing 10
c A LaTex expression showing 22 over 9
d A LaTex expression showing 13 over 10
e A LaTex expression showing 1 over 5
f A LaTex expression showing 211 over 20
5
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ _ \;+\;1 over 11 = 113 over 22
a A LaTex expression showing 12 over 13
b A LaTex expression showing 14 over 11
c A LaTex expression showing 15 over 11
d A LaTex expression showing 17 over 11
e A LaTex expression showing 11 over 2
f A LaTex expression showing 111 over 24
6
Find the fraction that makes this equation correct
A LaTex expression showing 11 over 5 \;+\; \ sub \ sub \ _ = 17 over 10
a A LaTex expression showing 23 over 10
b A LaTex expression showing 12 over 5
c A LaTex expression showing 23 over 50
d A LaTex expression showing 43 over 5
e A LaTex expression showing 1 over 2
f A LaTex expression showing 23 over 7
7
Find the fraction that makes this equation correct
A LaTex expression showing 21 over 5 \;+\; \ sub \ sub \ _ = 28 over 15
a A LaTex expression showing 1 over 3
b A LaTex expression showing 28 over 13
c A LaTex expression showing 21 over 19
d A LaTex expression showing 117 over 26
e A LaTex expression showing 25 over 7
f A LaTex expression showing 94 over 5
8
Find the fraction that makes this equation correct
A LaTex expression showing 21 over 11 \;+\; \ sub \ sub \ _ = 213 over 22
a A LaTex expression showing 5101 over 242
b A LaTex expression showing 27 over 11
c A LaTex expression showing 1 over 2
d A LaTex expression showing 215 over 22
e A LaTex expression showing 40 over 121
f A LaTex expression showing 25 over 11