Numbers can be added together using the column method which involves writing one number underneath the other.

What is ?

If the two numbers in a place value column add up to a number greater than 9, you must carry a digit.

What is ?

- Question
Using column addition, work out the value of .

The answer is 790.

Numbers can also be subtracted using the column method.

What is ?

When subtracting two numbers in a place value column, if the second number is larger than the first it cannot be subtracted. You need to exchange a digit from a higher column.

- Question
Using column subtraction, work out the value of .

The answer is 64.