Can you work out this math problem in the third grade of primary school?

Happy new year, the new representative is 2 178.

Analysis: If there are still four digits after multiplying by four, Le is 1 or 2, but if any number is multiplied by four and the mantissa cannot be 1, Le is 2 and the new one is 8. In order to keep new =8, fast can only be equal to 1, and the mantissa after year *4+3 is 1.

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Excuse me, how to do the second small question? With the continuous growth of railway passenger traffic, Chongqing North Railway Station is becoming more and more crowded. In order to satisfy the rail

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A total of 264 third-grade teachers and students went to rent a boat. How to rent a boat is the cheapest. The largest ships can carry six people each.

Recently, as long as I insist on doing math problems for more than an hour, I have a headache and feel that my energy can't keep up with the college entrance examination. What should I do?

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