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Fraction Subtraction - Missing Value (Simple) - Two Changed Denominators (Level 3)

This math topic focuses on practicing fraction subtraction, specifically finding missing values in equations with differently changed denominators. It includes advanced problems that require understanding how to subtract fractions with different denominators and finding the unknown fraction to make the equation correct. Each question provides multiple potential answers, challenging learners to apply their knowledge of fraction operations and simplification accurately. This falls under a broader unit on advanced fraction addition and subtraction.

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

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Sub. Missing Value (Simple) - Two Changed Denominators

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.

Find the fraction that makes this equation correct

___  −  23=121\_\_\_\;-\;\frac{2}{3} = \frac{1}{21}

Fraction Subtraction - Missing Value (Simple) - Two Changed Denominators Worksheet

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Math worksheet on 'Fraction Subtraction - Missing Value (Simple) - Two Changed Denominators (Level 3)'. Part of a broader unit on 'Fraction Addition and Subtraction - Advanced' Learn online: app.mobius.academy/math/units/fractions_addition_and_subtraction_advanced/
1
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;5 over 11 = 9 over 77
a A LaTex expression showing 4 over 7
b A LaTex expression showing 7 over 72
c A LaTex expression showing 13 over 11
d A LaTex expression showing 9 over 77
e A LaTex expression showing 11 over 72
f A LaTex expression showing 2 over 11
2
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;3 over 11 = 45 over 77
a A LaTex expression showing 43 over 77
b A LaTex expression showing 44 over 11
c A LaTex expression showing 10 over 19
d A LaTex expression showing 6 over 7
e A LaTex expression showing 4 over 7
f A LaTex expression showing 44 over 79
3
Find the fraction that makes this equation correct
A LaTex expression showing 5 over 7 \;-\;\ sub \ sub \ _ = 4 over 35
a A LaTex expression showing 4 over 19
b A LaTex expression showing 4 over 49
c A LaTex expression showing 2 over 13
d A LaTex expression showing 1 over 35
e A LaTex expression showing 4 over 35
f A LaTex expression showing 3 over 5
4
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;2 over 5 = 11 over 35
a A LaTex expression showing 13 over 35
b A LaTex expression showing 8 over 35
c A LaTex expression showing 10 over 33
d A LaTex expression showing 9 over 35
e A LaTex expression showing 5 over 7
f A LaTex expression showing 2 over 5
5
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;2 over 7 = 27 over 77
a A LaTex expression showing 7 over 18
b A LaTex expression showing 7 over 11
c A LaTex expression showing 54 over 539
d A LaTex expression showing 29 over 77
e A LaTex expression showing 27 over 77
f A LaTex expression showing 26 over 77
6
Find the fraction that makes this equation correct
A LaTex expression showing 6 over 7 \;-\;\ sub \ sub \ _ = 24 over 77
a A LaTex expression showing 42 over 7
b A LaTex expression showing 31 over 83
c A LaTex expression showing 144 over 539
d A LaTex expression showing 30 over 77
e A LaTex expression showing 23 over 77
f A LaTex expression showing 6 over 11
7
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;4 over 5 = 1 over 55
a A LaTex expression showing 1 over 27
b A LaTex expression showing 9 over 11
c A LaTex expression showing 1 over 55
d A LaTex expression showing 2 over 57
e A LaTex expression showing 1
f A LaTex expression showing 1 over 14