Grade 6 Integers Worksheets: Adding 4 integers | K5 Learning Integer worksheets: Adding 4 integers. Below are six versions of our grade 6 math worksheet on addition of four integers. The absolute value of each addend is no more than 20, so computations are easy and the emphasis is on understanding the difference between positive and negative numbers. These worksheets are pdf files. Worksheet #1 Worksheet #2 Worksheet #3 Worksheet #4 Worksheet #5 Worksheet #6.