Multiplying and Dividing Fractions

https://youtu.be/qmfXyR7Z6Lk

1) Change mixed numbers and whole numbers into improper fractions

2) Cross cancel and multiply across

OR

2) Multiply across and simplify

3) Change back into a mixed number if necessary

Keep the first fraction

Change to Multiplication

Flip the last fraction to the reciprocal

A reciprocal, or multiplicative inverse, is simply one of a pair of numbers that, when multiplied together, equal 1. If you can reduce the number to a fraction, finding the reciprocal is simply a matter of transposing the numerator and the denominator. FLIP!! To find the reciprocal of a whole number, just turn it into a fraction in which the original number is the denominator and the numerator is 1.

For example, the reciprocal of  $\frac{2}{3}$  is   $\frac{3}{2}$ , because  $\frac{2}{3}\times\frac{3}{2}=1$ .

The reciprocal of 7 is  $\frac{1}{7}$   because  $7\times\frac{1}{7}=1$ .

https://youtu.be/4lkq3DgvmJo