Year 4 Addition and Subtraction With addition in Year 4 the emphasis is on adding numbers up to 4 digits using the formal written method of columnar addition. We have a great selection of pages to help children master this and this week we have published some interesting new pages on using written methods but with a slight twist. Two 4-digit numbers are displayed horizontally and need to be added using the standard written method before completing the number sentence with a more than, less than or equals sign. Why not have a look now? Go to Year 4 Addition A further set of pages has also been added to the Year 4 Subtraction category. A 4-digit number is shown and four addition or subtraction commands are written in words. These need a great deal of care as getting any of the four calculations wrong will result in an incorrect final answer. Go to Year 4 Subtraction