Most people know just one way to multiply two large numbers by hand. Typically, they learned it in elementary school. They’re often surprised to find that there are a variety of ways to do ...

Dividing by a fraction tells us how many smaller parts make up a whole number or another fraction. Bar models can help visualise the process of dividing by a fraction. We can also use the 'invert and ...

A lot of students begin by finding a common denominator for the dividend and divisor when dividing by a fraction. And a lot of teachers intervene by saying, “Remember, you only need a common ...