

Add or Subtract
fractions



Multiply or Divide
fractions


th
That will determine what you should do next


Decide on the least common denominator (LCD)



Multiply by the same number in the numerator and
denominator of each fraction to make equivalent
fractions that contain the LCD



Add or subtract the new numerators



Reduce your fraction using lowest terms
Do the
same thing
with the
fractions
when you
have to
add or
subtract
mixed
numerals


You don’t want an LCD
 Multiply the numerators straight across
 Multiply the denominators across also
 Reduce your fraction to lowest terms


OR

Reduce any numerator/denominator
combo you can first
 And then multiply

Convert
mixed
numerals
to
improper
fractions
before you
begin to
multiply


Dividing

Multiplying



Always keep in mind
whether you are
adding/subtracting, or
multiplying/dividing, and
you’ll know what needs
to be done.

Fractions-Adding/Subtracting and Multiplying/Dividing