Ask a seven-year-old to add 7, 5, 9, 3 and 5 in their head and the numbers start to slip away before the end. Writing them down, then grouping them, changes everything. This 2nd grade adding four or more numbers worksheet offers three short stories. Mrs. Tom gives pennies to five grandchildren. Jacob and six friends count their puzzles, and your child finds who had the most, then the total. Finally, four children collect crickets in the garden. Every amount uses one-digit numbers, but the lists are long, so organization matters more than speed. A second page gives the answer key.