How fast can you calculate? Would you like to be faster? This book presents the time honored tricks and tips of calculation, from a fresh perspective, to boost the speed at which you can add -- whether a couple of numbers, or columns so long an accountant may faint. Find out how…
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How fast can you calculate? Would you like to be faster? This book presents the time honored tricks and tips of calculation, from a fresh perspective, to boost the speed at which you can add -- whether a couple of numbers, or columns so long an accountant may faint. Find out how…
Learn addition, subtraction, multiplication and division of whole numbers, integers, fractions, decimals, and algebraic expressions, as well as plotting points, graphing lines, and measuring length, weight, capacity, and time.