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How to play the multiplication and division method of abacus? Don't give me a pithy formula. It's better to give an example of how to calculate 25x25. If it's three digit
On the abacus, dial the multiplicand 25 first, and then dial the multiplier 25 on the last side of the abacus. It's better to keep away from the two numbers. First, use the multiplicand 5, and finally, think that you want to multiply by the last digit 5 of the multiplier. Read the formula and dial "five, five, twenty-five". The result is that the single digit 5 of 25 is behind the multiplicand
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