Operations- Up-to-Speed Math by Andrew M. Schorr, Thomas H. Hatch
This series brings students who have gaps in their understanding of math skills and concepts up to speed. "Low Gear" lessons review the basics; "High Gear" lessons extend understanding. 96-page work texts are built around NCTM standards. Units include: Adding Whole Numbers; Adding Fractions, Decimals, and Percents; Subtracting Whole Numbers; Subtracting Fractions, Decimals, and Percents; Multiplying and Dividing Whole Numbers; Multiplying Fractions and Decimals; Dividing Fractions and Decimals; Problem Solving.