Rapid Math Without a Calculator
Citadel Press, 2006 - 120 σελίδες
Collins shows readers how to do arithmetic and mathematical calculations in their heads, without recourse to a calculator. With minimum application of the hints, strategies and shortcuts contained within, anyone can attain proficiency in rapid math calculation, including addition, subtraction, multiplication , division and working with fractions.
Τι λένε οι χρήστες - Σύνταξη κριτικής
Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.
What Arithmetic Is
Short Cuts in Multiplication
Short Cuts in Division
Short Cuts in Fractions
Extracting Square and Cube Roots
Useful Tables and Formulas
Magic with Figures
Άλλες εκδόσεις - Προβολή όλων
able added Addition aliquot amount angle annex answer arithmetic balance becomes calculations called carry carry the tens casting cent CHAPTER Check ciphers circle combinations common fractions complement cube root cubic days and divide decimal difference dividend division divisor equal Equivalent Example excess of nines factor feet four fractions given gives hand hence hundreds inches interest kind latter learned length lower Magic means Measure mental meter method metric system mile multiplicand multiply Multiply any Number multiply by number number of days obtained operation original pair performed places pound quantity quotient rapidity remainder result rods Rule shown shows simple square root step subtraction Table tens column tens figure third tion unit figure units column upper Volume weight weights and measures whole number write written yards