Rapid Math Tricks & Tips: 30 Days to Number PowerDemonstrates a slew of time-saving tips and tricks for performing common math calculations. Contains sample problems for each trick, leading the reader through step-by-step. Features two mid-terms and a final exam to test your progress plus hundreds of exercise problems ranging from simple to more sophisticated. Also includes sections on ``Mathematical Curiosities'' and ``Parlor Tricks'' for math lovers. |
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Affix one zero affix or insert Affix two zeroes Builder 1 Estimate casting out nines column of numbers decimal point Definitely incorrect digit sum Disregard the decimal Disregard the zero divide a number Elementary Brain Builders Elementary Example Elementary Exercises Remember Elementary Trick estimation technique Example 2 Estimate fifth root final estimate following examples Halve Insert a decimal insert any necessary intermediary estimate intermediary product intermediary quotient multiply a number multiply the number necessary zeroes Number Potpourri number power Number-Power Note Parlor Trick percent point and think Probably correct producing a final producing the answer puts the answer quick estimate puts Rapidly Divide Rapidly Multiply remaining number remember to multiply solutions solutions on page Square the number Strategy tens digit test of reasonableness Thought Process Summary Trick 17 Trick 29 Trick 35 Trick 43 true answer two-digit number whole number wizard zero and decimal zeroes and think zeroes or decimal