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Mathematical three-bottle method
You can drink up to 9 bottles of beer.

18÷3=6 (bottle)

6÷3=2 (bottle)

(2+ 1)÷3

=3÷3

= 1 (bottle)

6+2+ 1=9 (bottle)

You can drink up to nine bottles of beer.

analyse

You can change it for the first time: 18÷3=6 (bottle)

The second time can be changed: 6÷3=2 (bottle)

Because I asked how many bottles to drink at most, I borrowed an empty bottle from others for the third time, that is, (2+ 1)÷3= 1 (bottle), and then returned an empty bottle to others after drinking, totaling 6+2+ 1=9 (bottle).

This topic mainly examines the development of students' mathematical thinking. When solving, the multiplication formula is reasonably used to calculate simple division.

Extended data:

Logical thinking ability is the core of children's intellectual activity ability and intellectual structure, so logical thinking ability is one of the most important intellectual factors for children to become talents.

Logical thinking ability plays a very important role in any stage of a person's life. In the early stage of children's thinking ability development, if parents pay attention to cultivating children's logical thinking ability, it will play a very important and fundamental role in children's development.