Key to Decimals

Key To Decimals - Adding, Subtracting and MultiplyingKey to Decimals begins with basic concepts and operations on decimals. Then it covers real-world uses of decimals in pricing, sports, metrics, calculators, and science.

Visual models illustrate new concepts. Simple, easy-to-follow instructions let students work on their own or in small groups as they master essential math skills. Key to Decimals’ success-oriented approach builds confidence and independence. It's a great way to prepare for standardized tests.

  • Book 1: Decimal Concepts
  • Book 2: Adding, Subtracting, and Multiplying
  • Book 3: Dividing
  • Book 4: Using Decimals
  • Answers and Tests available separately

View sample pages.

Note: Key to... workbooks are now published by McGraw-Hill Education and available for purchase at If you're a customer in a U.S. territory or outside the United States, find ordering information here.

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All of the Key to… books are absolute staples in my work. So many of the seventh-, eighth-, and ninth-grade students who are having problems in math have gaping holes in their preparation of decimals, fractions, and percents. And the Key to Decimals, Key to Fractions, and Key to Percents are far and away the best products I’ve seen that address these issues. —June Turner, mathematics tutor, Titusville, FL