Here is another maths worksheet of addition of two 4-digit numbers. To be successful with these children need to have a very good knowledge of number bonds up to ten eg know that 6 + 5 is 11. They must also be confident with place value, understanding that each column of numbers needs to be vertically in a line.
A full explanation of this method can be found on the first of the adding two 4-digit numbers worksheet.
This page and other similar standard written addition worksheets, can be found in our Four Rules, Addition section.