Simple method of the second volume of mathematics in the fourth grade of primary school, how to calculate the people's education edition

The simple operation of the second volume of the fourth grade People's Education Edition basically includes the following two types:

First, the operation law.

Multiplicative commutative law (for example:125x34x8 =125x8x34)

Multiplicative associative law (for example:123x25x40 =123x (25x40))

Multiplicative distribution law (for example: axb+axc=ab+ac) In addition, there are many variants of the multiplicative distribution law that need attention, such as adding 1.

Second, the resolution is sufficient (for example:125x32x25 =125x8x4x25)

This is a simple operation of multiplication, so the specific law will not be expanded. In fact, there is still a lot of knowledge to be proficient in.

I hope I can help you and adopt it.

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The second volume of the fourth grade, the second volume of the Soviet Education Edition, I said that you have the answer.