Quote:
Originally Posted by suicidejack
If you can afford to spend fourteen hours every day reading through textbooks and working out examples, it's not unreasonable to think you could learn seven years of material in half a year.
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This.
And being able to do simple maths like addition, subtraction & multiplication + division quickly in your head, then it speeds up working out examples tremendously.
And when I say simple I mean like 40 x 43, 827-678, 25^2 etc.
I've a simple method of squaring numbers if you'd like it. It is very useful for some numbers but only as efficient as normal multiplication for others.