In Year 6, the fourth year in KS2 and the last before secondary school, children will come across ever more difficult addition and subtraction problems in Maths. They will be expected to understand different terms describing addition and subtraction, such as altogether, difference, increase and decrease.

The ability to work out addition and subtraction problems is very important in all walks of life. It's used when stock-taking for example. A bakery has 100 iced buns and sells 60 by lunchtime. In the afternoon a customer requests 38 iced buns for a party. The baker needs to know whether she has enough buns left so she must be able to work out the answer. Or you might want to work out the year in which your grandmother was born. If she is 60 years old then you can take 60 from the current year to get the answer. Both of these are examples of addition and subtraction problems.

Have a go at the following Year 6 quiz and find out how much you know about addition and subtraction.

then the tens: 50 + 60 = 110

then the hundreds: 200 + 100 = 300

then add them all together: 300 + 110 + 10 = 420