The third of our money problems worksheets is a little harder than the first two. It involves adding pounds and pence. When working mentally it is usual to add the pounds first and then the pence, which, of course, is the opposite of the way we do a question on paper.
Some of these questions involve more than one stage and it might well be a good idea to jot down intermediate answers. For example, when working out the cost of 3 items jot down the answer to the cost of the first two before adding the third. This also makes it easier when checking that answers are correct.