This week we have a set of four addition worksheets with a difference. These are rather like wordsearches, but harder! Rather than letters of the alphabet there is a grid with 25 sums in it. The task is to find a set of four sums in a row which all have the same answer. The row of 4 could be across, down or diagonally. To make it even more challenging there are actually two rows of 4 to find. The two rows each rhave a different answer. Addition: 4 in a row number search