Math K-Plus

How To Add Fractions, With Common Denominators, Or Different Denominators

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Learn How To Add Fractions With Common Denominators Or Different Denominators



Add Fractions With Common Denominators

59  +  89  = 

The Denominators Of Both Fractions Are The Same - Add Numerators (5 + 8)
(5 + 8)9  =  139  = 


Converting Improper Fraction To Mixed Number
139  =  149




Add Fractions With Different Denominators

38  +  56  = 

We Must Cross-Multiply Both Fractions To Get A Common Denominator
38  =  3 × 68 × 6  =  1848

56  =  5 × 86 × 8  =  4048

Both Fractions Now Have Common Denominators - Add Numerators (18 + 40) (18 + 40)48  =  5848  = 

Greatest Common Divisor
5848  =  58 ÷ 248 ÷ 2  =  2924  = 

Converting Improper Fraction To Mixed Number
2924  =  1 524


Recommended reading: Adding Fractions Calculator, How To Subtract Fractions, How To Multiply Fractions, and How To Divide Fractions.