Super-quick Adding and Subtracting in Your Head (30 Second Challenge)

by Norman D. Lock

As a result of media and parental attention to need for improvement of core skills, this is a fast-paced mental arithmetic book to encourage mastery of two of the four rules of number. It is part of a... This description may be from another edition of this product.

• Format: Spiral-bound
• Language: English
• ISBN: 0721434460
• ISBN13: 9780721434469
• Release Date: July 1995
• Publisher: Ladybird Books
• Weight: 0.30 lbs.
• Dimensions: 11.7" x 0.2" x 4.7"