Dividing Fractions & Mixed Numbers

Do Now:

U2L8PS12-3 Accurately multiply/divide fractions and decimals.

Fractions•To divide fractions, multiply by the

reciprocal

•Remember : KEEP, CHANGE, FLIP▫Keep the first number as it is▫Change the operation from DIVISION to

MULTIPLICATION▫Flip the second number upside down

•Then multiply fractions as usual•Simplify if necessary

Examples

Dividing Mixed Numbers•Change mixed number to an improper

fraction•Then KEEP, CHANGE, FLIP•Multiply as usual

▫(top times top, bottom times bottom)•Simplify if necessary

A whole number divided by a fraction

•Khan Academy video example

Question to think about during video:

•What do you do with a whole number when multiplying it with a fraction?

Guided Practice

•4 minutes to try the following problems

÷ ÷

Assignment

•P.228-229 #8-21, 25-31, 38-42