If you are like me, you prefer multiplying and dividing fractions to adding and subtracting them because with multiplying and dividing fractions you don’t have to go through theĀ work of rewriting the fractions with common denominators.

The Maths is Fun website has a page which uses pizza slices to remind us WHY we need to find a common denominator when adding and subtracting fractions.

Understanding WHY we do certain things in maths is equally important to knowing HOW to do the steps!

ReadĀ it here http://www.mathsisfun.com/fractions_addition.html