Over the past year, since I took over the common-core math beat, I’ve been thinking a lot about fractions. As I wrote in November, the Common Core State Standards for mathematics emphasize ...

Learn how to perform calculations to add fractions with BBC Bitesize Maths. For students between the ages of 11 and 14. ... Also known as the least common multiple. of the denominators.

Revise how to add, subtract, multiply and divide fractions, ... Also known as the Least Common Multiple. of the denominators for addition and subtraction.