Discover how to subtract two-digit numbers in this Year 2 article from BBC Bitesize.

When you use the column method to subtract two numbers, the larger number goes above the smaller number. You then subtract digits from each column, starting with the ones. Let's look at a question ...

How to subtract numbers in a single cell in Excel Standard subtraction in Excel is relatively simple. Click in an empty cell, type an equal sign and then enter the numbers you want to subtract.

For third graders learning Common Core math in Georgia, there are four ways to subtract—and only four ways allowed.

Prime numbers are whole numbers greater than 1 that are not divisible by any whole number other than 1 and itself. The first few are 2, 3, 5, 7, 11, 13 … To explain how the RSA algorithm works ...