Subtraction - Straight Forward Math Author:S. Harold Collins The Straight Forward Math Series is designed for parents, teachers and students. — The Straight Forward Math Series is a simple, straightforward approach to learning mathematical operations. The Series is systematic, first diagnosing skill levels, then practice, periodic review, and testing. — The Straight Forward Math Series builds new math skill... more »s and enriches existing ones. It is ideal for one student or many. Progression through a particular math skill is thorough and complete.
Mastery of basic math facts with the Straight Forward Math Series provides success for subsequent math skills.« less