The 42 worksheets in the book cover only addition and subtraction. There are 26 problems on each worksheet. The difference and sum on each worksheet are between 0 and 10. The answer keys are provided... This description may be from another edition of this product.
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.