Excerpt from Rapid Figuring: Including Over Seventy Short Cuts and Other Useful Facts
The number of students who can add accurately. Even at the slow rate of 30 figures per minute. Are deplorably few, whereas every person who has reached the age of 15 years should acquire a speed of from 100 to 120 figures per minute. They should read figures in groups as they read letters in words. The drills here given in figure reading, in addition, subtraction and multiplication. Are an excellent means for obtaining this result.
The short cuts, too, are invaluable to any ambitious youth. Much time is often wasted using pencil and paper when the work could be done infinitely quicker mentally.
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