• Preface
• Introduction
• Challenge
• 1: Arithmetical Advice
• 2: Speedier Sums and Subtractions
• Interlude I: The Magic of 111,111
• 3: Accounting for Taste -- Adding Columns Quickly
• Interlude II: Checking, Check Digits, and Casting out Nines
• 4: Quicker Quotients and Pleasing Products -- Multiply and Divide by Specific Numbers
• Interlude III: Doomsday
• 5: Calculations with Constraints -- Multiply and Divide by Numbers with Specific Properties
• Interlude IV: Multicultural Multiplication
• 6: Super Powers -- Calculate Squares, Square Roots, Cube Roots, and More
• 7: Close-Enough Calculations -- Quick and Accurate Approximations
• Interlude V: Approximating the Number of Space Aliens
• 8: Multiplying Irrationally
• The Grand Finale
• Further Reading
• Appendix I: Calculating Doomsday
• Appendix II: The Squares from 1 to 100