It is very important that a child master addition and subtraction before moving on to the more complex math concepts. These two are the foundations for higher math. To increase a child's understanding on how plus and minus works, he/she must be subjected to as many equations as possible. That's the purpose of this workbook. Secure a copy today!
ThriftBooks sells millions of used books at the lowest
everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We
deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15.
ThriftBooks.com. Read more. Spend less.