After dinner, my mother and I went for a walk in Little Rock Lake.

When we walked along the stone lake, the scenery around the lake was very beautiful, and the colorful lights shone. There are many fruit trees near the water, including pomegranate trees, orange trees and peach trees. As we walked and talked, my mother suddenly said, "Shunshun, my mother wants to test your math. Do you agree? " "Very good." I said yes.

"I walked along the lake and planted a peach tree every 50 meters. How many peach trees are there by the lake? "

"Mom, this problem can't be solved because you didn't tell me how many meters there is on a road by the lake?"

"My son is really great. What if there are 5000 meters by the lake? "

"It's too simple, 5000÷50= 100, 100 trees." I said without thinking.

Mom smiled and touched my head: "Good boy, think again."

As I walked, I thought carefully. What's my problem? I thought about it for a long time, but I still couldn't figure it out. I had to bite the bullet and ask my mother.

"Good boy, think about it. If this road is only 50 meters, how many trees will you plant?"

"Two, of course, the first and the last."

"Isn't it 50÷50= 1 tree according to your algorithm?" Say that finish, mother smiled.

Then it dawned on me that I had missed the last tree. "It should be 10 1."

"Well, that's great! Children, numbers come from life, seemingly simple problems, we should think carefully. What if this 5000 meters happens to be a circle? "

This time I thought clearly, "100 tree. Because the head and tail are stacked together. The last one doesn't count. "

"My son is really great."

My mother and I went home happily.

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