This math topic focuses on practicing how to find missing values in fraction subtraction equations. It specifically deals with fractions that require the adjustment of denominators or involve mixed numbers, enhancing skills in fraction manipulation and arithmetic. Each problem presents an equation with one unknown fraction, and multiple choice answers are provided for students to select the correct missing fraction that balances the equation. Overall, the topic deepens understanding of fraction subtraction and denominator alignment within more complex fractional math contexts.

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

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Fraction Subtraction - Missing Value (Mixed) - One Changed Denominator Worksheet

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Fraction Subtraction - Missing Value (Mixed) - One Changed Denominator
1
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;112 over 21 = 5 over 7
a A LaTex expression showing 117 over 21
b A LaTex expression showing 0
c A LaTex expression showing 12 over 7
d A LaTex expression showing 22 over 7
e A LaTex expression showing 1 over 4
f A LaTex expression showing 3 over 8
2
Find the fraction that makes this equation correct
A LaTex expression showing 32 over 3 \;-\;\ sub \ sub \ _ = 31 over 3
a A LaTex expression showing 2
b A LaTex expression showing 31 over 3
c A LaTex expression showing 41 over 2
d A LaTex expression showing 1 over 3
e A LaTex expression showing 13 over 14
f A LaTex expression showing 122 over 9
3
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;15 over 6 = 5 over 6
a A LaTex expression showing 22 over 3
b A LaTex expression showing 119 over 36
c A LaTex expression showing 2 over 3
d A LaTex expression showing 11 over 17
e A LaTex expression showing 11 over 2
f A LaTex expression showing 3
4
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;2 over 9 = 24 over 9
a A LaTex expression showing 29 over 11
b A LaTex expression showing 18 over 9
c A LaTex expression showing 21 over 3
d A LaTex expression showing 44 over 81
e A LaTex expression showing 22 over 3
f A LaTex expression showing 21 over 9
5
Find the fraction that makes this equation correct
A LaTex expression showing 32 over 3 \;-\;\ sub \ sub \ _ = 11 over 3
a A LaTex expression showing 22 over 3
b A LaTex expression showing 1 over 2
c A LaTex expression showing 0
d A LaTex expression showing 1
e A LaTex expression showing 21 over 3
f A LaTex expression showing 5
6
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;2 over 15 = 24 over 15
a A LaTex expression showing 15 over 6
b A LaTex expression showing 117 over 19
c A LaTex expression showing 25 over 14
d A LaTex expression showing 22 over 5
e A LaTex expression showing 27 over 15
f A LaTex expression showing 2
7
Find the fraction that makes this equation correct
A LaTex expression showing 12 over 5 \;-\;\ sub \ sub \ _ = 3 over 5
a A LaTex expression showing 1
b A LaTex expression showing 2
c A LaTex expression showing 2 over 5
d A LaTex expression showing 4 over 5
e A LaTex expression showing 2 over 3
f A LaTex expression showing 0
8
Find the fraction that makes this equation correct
A LaTex expression showing 12 over 7 \;-\;\ sub \ sub \ _ = 17 over 21
a A LaTex expression showing 12 over 49
b A LaTex expression showing 1
c A LaTex expression showing 35 over 7
d A LaTex expression showing 26 over 147
e A LaTex expression showing 10 over 21
f A LaTex expression showing 16 over 21