Instead of typing out each individual cell reference, you can use =SUM(A1:A3) to quickly add the numbers in cells A1 through ...

Subtraction is the opposite to addition. So subtraction can always be checked by adding. Check that 182 - 37 = 145 by doing the sum: 145 + 37 = 182 Look out for these words in problems ...

It does this by breaking the sum down into different place values and then subtracting those numbers away from one another separately. So 92 tickets were sold and 27 people have left. We start by ...