Operations with Fractions Addition subtraction multiplication and division

Operations with Fractions Addition, subtraction, multiplication and division Multiplication first, it’s the easiest one to do… = Multiplication RULE: Multiply across the top (the numerators), then multiply across the bottom (the denominators). If necessary, reduce the fraction to lower terms.

$Multiply these fractions now = =$

Multiply these fractions now = =

$Multiply these fractions now = =$

Multiply these fractions now = =

Division of Fractions… also easy, but with a “ 1 st step” to do first! = = =3

$Divide these fractions now =$

Divide these fractions now =

$Divide these fractions now = = = =1 =1$

Divide these fractions now = = = =1 =1

Addition of Fractions… make sure you have COMMON DENOMINATORS, make sure the bottom numbers are the same before you add. =

Addition of Fractions… make sure you have COMMON DENOMINATORS, make sure the bottom numbers are the same before you add. = Both of these addition problems STARTED with common denominators, all you have to do is add them up. Easy!

$This is not quite the same, these fractions have different bottom numbers, different denominators.$

This is not quite the same, these fractions have different bottom numbers, different denominators. = You need to figure out a common denominator first, then add. (hint, it’s FOUR!)

$This is not quite the same, these fractions have different bottom numbers, different denominators.$

This is not quite the same, these fractions have different bottom numbers, different denominators. = x 2= = x 2= The four can’t be lowered to a 2, but the two can be doubled to four. If you double the bottom, double the top

$Add these fractions. =$