By Crystal R. Stanley on July 11 2018 18:51:43
If the two values being subtracted are mixed fractions, it is often easier to turn them into improper fractions to perform the subtraction. This avoids any kind regrouping or borrowing from the minuend fraction if the numerator in the subtrahend is larger.
What it is about memorizing multiplication tables that make my kids throw their pencil across the room and shout, “I hate math?” It is because, unlike spelling or vocabulary, numbers don’t create pictures for us. Multiplication tables are strings of seemingly random numbers that our children are expected to not only remember, but keep in order and in context with the numbers they are multiplying by.
In the simplest cases, the two fractions will already have a common denominator. In this case, add the numerators and then reduce the resulting fraction.
Start by following the basic process for fraction multiplication, turning any mixed fractions into improper ones. Before you cross cancel or multiply, however, swap the numerator and the denominator in the second fraction. This is called taking the reciprocal and it is the key step to turn this into a division operation. Then, cross cancel, multiply across to get the answer fraction, and reduce.
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