1, when two numbers are multiplied, one factor is expanded (or reduced) by n times, and the other factor is unchanged, then their product is also expanded by n times. (n is a non-zero natural number).

2. If a factor is amplified by a factor and a factor is amplified by b times, the product is amplified by a*b times.

When two numbers are multiplied, one factor is enlarged by n times and the other factor is reduced by n times, so their products remain unchanged.

4. Summary: The law of product change refers to the change of product caused by the change of factors. If one factor is enlarged by n times, and the other factor remains unchanged, the product is also enlarged by n times. If one factor is enlarged by n times and the other factor is reduced by n times, the product remains unchanged.

Edited on 2020- 12-0 1

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