6.2.5 Divide Whole Numbers by Fractions

Divide Whole Numbers by Fractions

Definition:

Reciprocal --> Inverting a fraction, which is just another way of saying that you need to switch the numerator and the denominator

Example: the reciprocal of the fraction 5/8 is 8/5

One way to divide fractions is to multiply by the reciprocal.

    • With this method, we leave the first number alone, change the division sign to a multiplication sign, and then flip (reciprocal) the last number.
    • After you've done that, just treat it like a normal multiplication problem.


Homework: