Fraction Addition - Missing Value (Mixed) - One Changed Denominator (Level 1)

This math topic focuses on the addition of fractions involving a missing value with one altered denominator, aiming to build foundational knowledge in mixed fraction addition and subtraction. It develops the skill of determining the missing fraction in a sum equation to achieve a specific result. Each question presents a sum equation with one fraction fully given and the other represented by a placeholder, accompanied by multiple-choice answers. The learners are expected to determine the correct missing fraction to complete the equation accurately.

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

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Add. Missing Value (Mixed) - One Changed Denominator

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


Find the fraction that makes this equation correct

213  +  ___=2122\frac{1}{3}\;+\; \_\_\_ = 2\frac{1}{2}

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

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Math worksheet on 'Fraction Addition - Missing Value (Mixed) - One Changed Denominator (Level 1)'. 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
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ _ \;+\;1 over 9 = 14 over 9
a A LaTex expression showing 14 over 9
b A LaTex expression showing 41 over 4
c A LaTex expression showing 17 over 9
d A LaTex expression showing 11 over 3
e A LaTex expression showing 21 over 4
f A LaTex expression showing 15 over 9
2
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ _ \;+\;1 over 4 = 23 over 4
a A LaTex expression showing 11 over 16
b A LaTex expression showing 2
c A LaTex expression showing 3 over 4
d A LaTex expression showing 33 over 4
e A LaTex expression showing 21 over 2
f A LaTex expression showing 11 over 2
3
Find the fraction that makes this equation correct
A LaTex expression showing 21 over 3 \;+\; \ sub \ sub \ _ = 24 over 9
a A LaTex expression showing 519 over 27
b A LaTex expression showing 24 over 9
c A LaTex expression showing 21 over 9
d A LaTex expression showing 19 over 16
e A LaTex expression showing 1 over 9
f A LaTex expression showing 21 over 3
4
Find the fraction that makes this equation correct
A LaTex expression showing \ sub \ sub \ _ \;+\;1 over 4 = 13 over 4
a A LaTex expression showing 14 over 7
b A LaTex expression showing 7 over 16
c A LaTex expression showing 11 over 2
d A LaTex expression showing 1 over 2
e A LaTex expression showing 2
f A LaTex expression showing 11 over 4
5
Find the fraction that makes this equation correct
A LaTex expression showing 11 over 2 \;+\; \ sub \ sub \ _ = 13 over 4
a A LaTex expression showing 2
b A LaTex expression showing 12 over 7
c A LaTex expression showing 1 over 4
d A LaTex expression showing 11 over 4
e A LaTex expression showing 5
f A LaTex expression showing 21 over 2
6
Find the fraction that makes this equation correct
A LaTex expression showing 31 over 7 \;+\; \ sub \ sub \ _ = 33 over 14
a A LaTex expression showing 105 over 49
b A LaTex expression showing 213 over 15
c A LaTex expression showing 94 over 7
d A LaTex expression showing 1 over 14
e A LaTex expression showing 33 over 13
f A LaTex expression showing 27 over 8
7
Find the fraction that makes this equation correct
A LaTex expression showing 11 over 3 \;+\; \ sub \ sub \ _ = 14 over 9
a A LaTex expression showing 11 over 3
b A LaTex expression showing 12 over 9
c A LaTex expression showing 1 over 9
d A LaTex expression showing 125 over 27
e A LaTex expression showing 13 over 13
f A LaTex expression showing 52 over 3