Common Core proponents have long argued that the push toward national standards promotes “college and career readiness.” Not so, argues a new report by the Boston-based Pioneer Institute for ...

In adding and subtracting fractions with unlike denominators, you have to get a least common denominator which is exactly like the least common multiple it just so happens to be in the denominator.

1/4 plus 2/5, and you recognize that you have unlike denominators. Step two is that you need to find the least common denominator between those two fractions. (paper rustles) So to do that ...

Support your knowledge of this topic by looking at these guides on Lowest Common Multiple and equivalent fractions. Look at the examples below on how to add and subtract fractions and mixed numbers.

The lowest/least common multiple (abbreviated to LCM) is the lowest number that is a multiple of two or more subject-numbers. For example, the common multiples of 4 and 5 are 20, 40, 60 ...