This topic focuses on the skill of subtracting fractions, specifically identifying a missing value in a simple subtraction equation with one changed denominator. It requires the learner to solve for the unknown fraction in equations such as "1/2 - ? = 1/3". This is a fundamental component of the larger unit on introduction to addition and subtraction of fractions. Various possible answers are provided for the questions.

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

more
View

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

Mobius Math Academy logo
Fraction Subtraction - Missing Value (Simple) - One Changed Denominator
1
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;1 over 14 = 1 over 14
a A LaTex expression showing 1 over 196
b A LaTex expression showing 3 over 13
c A LaTex expression showing 0
d A LaTex expression showing 1 over 7
e A LaTex expression showing 1
f A LaTex expression showing 3 over 14
2
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;1 over 4 = 1 over 4
a A LaTex expression showing 1
b A LaTex expression showing 5 over 8
c A LaTex expression showing 2 over 5
d A LaTex expression showing 1 over 2
e A LaTex expression showing 1 over 8
f A LaTex expression showing 11 over 4
3
Find the fraction that makes this equation correct
A LaTex expression showing 1 over 3 \;-\;\ sub \ sub \ _ = 2 over 9
a A LaTex expression showing 3 over 11
b A LaTex expression showing 1 over 9
c A LaTex expression showing 1
d A LaTex expression showing 1 over 2
e A LaTex expression showing 4 over 9
f A LaTex expression showing 2 over 3
4
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;1 over 6 = 1 over 3
a A LaTex expression showing 1 over 2
b A LaTex expression showing 1 over 3
c A LaTex expression showing 1 over 18
d A LaTex expression showing 1 over 9
e A LaTex expression showing 2 over 5
f A LaTex expression showing 2 over 7
5
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;1 over 21 = 2 over 21
a A LaTex expression showing 2 over 441
b A LaTex expression showing 3 over 10
c A LaTex expression showing 0
d A LaTex expression showing 1 over 7
e A LaTex expression showing 4 over 21
f A LaTex expression showing 1 over 147
6
Find the fraction that makes this equation correct
A LaTex expression showing 1 over 2 \;-\;\ sub \ sub \ _ = 1 over 4
a A LaTex expression showing 1 over 2
b A LaTex expression showing 3 over 5
c A LaTex expression showing 1 over 4
d A LaTex expression showing 1 over 8
e A LaTex expression showing 3 over 4
f A LaTex expression showing 11 over 4
7
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ sub \ ;-\;1 over 9 = 2 over 9
a A LaTex expression showing 5 over 9
b A LaTex expression showing 1 over 3
c A LaTex expression showing 2 over 13
d A LaTex expression showing 3 over 10
e A LaTex expression showing 2 over 81
f A LaTex expression showing 1 over 27
8
Find the fraction that makes this equation correct
A LaTex expression showing 1 over 3 \;-\;\ sub \ sub \ _ = 1 over 6
a A LaTex expression showing 1 over 3
b A LaTex expression showing 2 over 3
c A LaTex expression showing 1 over 9
d A LaTex expression showing 1 over 6
e A LaTex expression showing 4 over 7
f A LaTex expression showing 4 over 5