New Grade 4 Math Worksheets Pages | K5 Learning We have reworked our grade 4 math worksheets, and added a number of new worksheets. Our worksheets now include: Addition Mental addition, adding 2-, 3-, 4-, 5- and 6-digit numbers in columns and adding 3-digit numbers in columns. Subtraction Mental subtraction, subtracting 3-, 4-, 5- and 6-digit numbers in columns - with and without borrowing.