Mathematics is an interesting and learned subject. There are endless mathematical stories in life, which are closely related to your life and mine. They are also pagodas of games.

Remember, Mr. Liu once said: every four years is a leap, every hundred years is not a leap, and every four hundred years is a leap. I didn't understand it at first, but I didn't know what it meant until I heard what Teacher Liu said: that is to say, there is only one leap year in four years, and it will be considered as a leap year until 100, and it will be considered as a leap year until 400 years. Because leap years are only when the quotient of a year divided by four is an integer and there is no remainder. After listening to Teacher Liu's explanation, I finally know how to calculate a leap year in a normal year.

I still remember an interesting math problem that Teacher Liu said: When Mingming waits for 8 people, there is only one word difference between Mingming and the problem of 8 people, which means that 8 people include Mingming himself. Moreover, it means that eight people add up to nine people. I didn't understand it at first, then I read it word by word, thought about it, and finally understood it.

In life, as long as we are willing to study and discover, we will understand a lot of truth.