Skillful use of mathematics

This morning, my mother proposed to go to Zijingshan Park. I am very happy. I am very happy. I want to be a superman and take my mother to fly to Zijingshan Park!

Dad sent us to Zijingshan Park, but refused to let me ask you to get off the bus. Dad said to us in a mysterious way: "After answering the questions, you can get off." Dad proudly said to us: "Assume from home to Bauhinia The mountain park is 100 kilometers away. Take the taxi for 6 yuan, take 10 kilometers, leave 5 yuan for every 10 kilometers, wait at least 5 minutes for the traffic lights, and 1.25 yuan for one minute. How much does it cost to get from home to here? I turn my eyes and make a move. Use 100-10=9090÷10=99 times 5=4545+6=511. 25 times 5 is equal to 6.351+6.3=57. 3, I have figured out the answer, Can't wait to tell Dad, Dad suddenly like a meteor squatting, like a dejected, had no choice but to let us get off.

When I first entered the door, I was shocked. Many people were surrounded by a place, as if they were in a meeting. One person shouted, and the mathematics title was won for free. How much was it added from 1 to 9999? As soon as I heard the math problem, I was overjoyed and happy. Mom added one by one, added to 238 and forgot. As soon as I thought about this answer, I had a trick. I tried my best and finally overcome this problem.

Multiply 4999+5000

=10000 by 4999+5000

=49990000+5000

=49995000

I immediately said the answer and my thoughts. He said excitedly: "This kid is right!" Everyone envied me and opened my eyes. My mother said, "Awesome Yang Jinsong"

There is mathematics everywhere, as long as you pay attention to it, you can find it!

Henan Zhengzhou Guancheng Yuxiang Experimental Middle School, the first day: Yang Jinsong