+-x and dividing fractions

by Brandon

Multiplying

Example:



1/2


2/2


Step 1. You multiply the top numbers:

Like,

1/2=1 × 2/2


2/2


Step 2. You multiply the bottom numbers:


1/2=1 × 2/2


252 × 510



Step 3. You Simplify if you need to


2/1


105

An example would be

Dividing fractions

Adding fractions (both ways)


  • Step 1: You need to make sure the bottom numbers (the denominators) are the same
  • Step 2: You add the top numbers (the numerators), put the answer overthe denominator
  • Step 3: You simplify the fraction if needed

Here, this will explain it

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Subtracting is easy

Subtracting is just like adding


The LCM of 11 and 22 is 22... So the LCD is 22. You just need to change the numbers


Done!

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Dividing is easy

Keep change flip


Example:

1/1


1/6



Step 1. You turn the second fraction upside down (it becomes a reciprocal):


1 becomes 6


6/1



Step 2. You multiply the first fraction by that reciprocal:

(multiply tops ...)


1/6=1 × 6/6


212 × 12


(... multiply bottoms)

Step 3. You simplify the fraction:

Big image