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Common Sense Speed Math: Long-hand Subtraction

So you want to get faster at long-hand math.

There may be several reasons for this. You may be an elementary school student (or the parent of one), or perhaps you are an adult who has found a new need for basic math (sans calculator).

If you need to take a test like the SATs, an EEI aptitude test (for employment/hiring screening in technical professions), or indeed any employment or academic test that requires timed math and doesn’t allow a calculator, what you really need is to cut down the wasted time you spend on facts that you could have memorized without much trouble.

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