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... and nine columns, so it’s called the 9×9 table. Amy has already learned the basics of addition and subtraction, so it won’t be very hard to learn this.”
“Then what’s that little cross in the middle?” asked Amy, pointing at the “x”, a little confused.
“It’s called the multiplication sign, and means the process of calculating by multiplying. It’s simpler this way,” explained Mag. He asked Amy to sit beside him and then pushed the 9×9 table towards her. “Only Father knows this 9×9 table ...
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