This morning, I was doing my math summer homework. I wrote and wrote. Unfortunately, I met a very difficult problem. I've thought about it for a long time, but I can't figure it out. The problem is this: the circumference of a rectangle is 280 cm and the width is 40 cm. Take one side of this rectangle as the bottom, make a triangle with a height of 50 cm, and find the area of this triangle. I read it and thought: Yes! This question is still a bit difficult! But no matter how hard it is, you have to survive! At this time, I asked my father for help. Father patiently told me how to solve it. Before my father finished, I suddenly realized. The original problem is so simple, and the formula is: 280 ÷ 2 =140 (cm)140-40 =100 (cm).

100×50÷2=2500 (square centimeter).

I was ecstatic to see that I finally got the wrong question again and again. In fact, any topic is not that difficult, just don't think about it. As long as you think, any topic is very simple.

School is about to start, my homework is basically finished, and there is nothing too much trouble. My winter vacation plan has been completed very well. Let's have a new semester, fly high!

extreme

Today, I came across such incredible data in a book: "A piece of paper with a thickness of 0.0 1 cm is thicker than Mount Everest after being folded in half for 30 times?" This data is a bit "absurd" no matter how you listen to it. After all, it is a thin piece of paper. Can folding in half really surpass Everest? But many unexpected things may happen, so only through calculation can we uncover the mystery of all this.

Immediately I multiplied 0.0 1 cm by 2, 1 * * 30 times, and got10737418.24cm.. Then, I converted the height of Mount Everest from 8848. 13 m to 8848 13 cm. By comparison, it is obvious that the thickness of paper folded in half for 30 times is indeed better than the height of Mount Everest, which is more than 10 times of the latter.

In fact, amazing data like this are everywhere in ordinary life, as long as you have a pair of eyes that are good at discovering.

Tisso

Today, my grandparents and I went shopping in Zhangdian Commodity City. There are so many people here! I thought: What if I get lost? Suddenly I saw a lot of people in a circle, as if watching something. I squeezed in and saw that it was a floor plan of a small commodity city. Grandma came to me and asked me gently, "Chen Feng, do you know which side of the elevator is the toy area?" "North". I blurted out, "Do you know which direction the toy section and stationery section are?" This time I thought for a while before answering: "Northwest." "It's very kind of Chen Fengzhen. How about grandma rewarding you with a toy? " "Well, well!" I jumped up with joy, and then, we excitedly ran to the toy area in the northwest corner ... At night, I looked at the dark sky outside the window and asked my mother, "Mom, what do you mean, it's so dark at night that those picnickers are lost?" Mother pointed to a star and said, "Well, look, that's the Big Dipper. It is in the north, so those people will not find the wrong direction as long as they see the Big Dipper. " "Oh, so that's it!" I breathed a sigh of relief and fell asleep.

Mathematics is everywhere in life. As long as you pay attention, you will find the mystery.