Multiplication -- Addition -- Subtraction -- Division -- Checking your answers with digit sums -- Fractions -- Decimals -- Percentages -- Divisibility -- Squared numbers -- Cubed numbers -- Numbers to the fourth and fifth powers -- Square and cube roots -- Appendixes: Practice problems -- Answer key.
Summary:
"Simple methods for doing math quickly in your head ; shortcuts and tricks for on-paper calculations ; helpful insights to improve your understanding"--Cover.
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