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