Hand a seven-year-old 603 – 498 and you may see the pencil hover over the zero for a long time. There is nothing to take from, and the hundreds seem far away. This 2nd grade adding and subtracting to 1000 worksheet puts that puzzle right at the top. The page holds fifteen problems set out in columns, each with a box for the answer. The middle column adds, and the two outer columns subtract. Numbers range from 26 up to 1,000, and several problems, like 900 – 99, push your child to regroup more than once. A second page gives the answer key.