If you do want to produce your own worksheets and don't have the Microsoft software, you can download free tools like OpenOffice or use an online word processor or spreadsheet such as the free Google Docs which help you do similar tasks. You just need to create a table with as many rows and columns as you need and then type in some numbers before printing it off for your children to practice _ depending on the level of complexity choose single digits or multiple digits. If you're not sure what level to start at, aim low, start with easy numbers and see how your child goes, the self_esteem boost they'll get from acing the first worksheet will give them confidence for more difficult math problems.
Books _ Among the dozen or so math word_problem books of note published in the past decade, one, written by Mary Jane Sterling, from a well_known, popular brand of information books, which I'm unable to name here, stands out. The publisher has put a decent chunk of the book online at books.Google.com (go to books.google.com and search for sterling word problems). Striking Difference in Child Development _ If you are considering arranging extra math drills for your child, keep in mind that story problems are more like the real_life problems he or she will encounter, and, they help develop his or her critical_thinking skills. Children develop mental maturity like they do physical maturity. Think about the strikingly different mental development that ordinary math worksheets might foster in comparison to math word problems. Priorities _ Ordinary math worksheets certainly serve a purpose, but think carefully about the ratio of those to story problems when helping your child prioritize his or her available math study time.