Add and Subtract Mixed Numbers Full Lesson Isaac School. In this tutorial take a look at adding together mixed fractions with unlike denominators. Example Subtract 5 from 9 12 All you have to do is to subtract the whole number from the quotient in the mixed number and add the fraction to the result. Adding and Subtracting Mixed Numbers with Different. Proper Fractions Improper Fractions and Mixed Numbers. Sums of Mixed Numbers CK-12 Foundation. Calculations with mixed numbers and fractions This video covers addition. For example in Australia mixed numbers are mentioned in Year 4 here. Adding Subtracting Mixed Numbers Exercises BACK NEXT Example 1 Add 2 35 6 1 Gimme a Hint Hint your common denominator is 40. Example 1 Work out the fraction sum below giving your answer as a mixed number.