In the kingdom of mathematics, 1~9 looks down on 0, and 0 is angry. He said, "It's all zeros." So, all zero ran out of the bag and brand. 9 Look at the test paper and say, "How did my 100 become 1?" "The number plate in my shop is 105. How did it become 15? " Since then, people no longer look down on 0. (Wang Shiyi)

Order milk

Today, my mother asked for some milk, and I almost jumped for joy. But my mother said I had to answer a math problem correctly before I could drink it. I said, "Come on, you can't beat me."

The problem is: there are two kinds of milk, one is one yuan and twenty cents, and the other is one yuan. Mother asked which was cheaper. I asked how many days it would take, and my mother replied that 30 days a month. I said, "It's too simple. Of course, one yuan is cheap." Mom asked how much it was cheaper, and I said, "It's too difficult, I don't count." My mother gently taught me: "First, put the extra 20 cents a day aside, and use 30×2=60 (cents) for 30 days, and 60 cents =6 yuan, even if it is cheap for a month."

I said, "I see." My mother immediately reminded me: "In the future, don't be arrogant." I said, "Of course, of course."

Thinking about 5

When I was doing winter vacation homework, I met a difficult problem, and I couldn't figure out the answer. The question is this:

5 5 5 5 5= 1。 Then I went to ask my mother, and her mother said, "Under what circumstances is the result of the formula equal to 1?" I said, "When two identical numbers are divided, the result is equal to one." "Yes, let's fill it out." Then, my mother filled in a symbol and the formula became 5 5 5 5÷5= 1. I understood the formula as soon as I saw it. I said to my mother, "Do you want to make the first three numbers equal to zero, so the result is equal to 1?" Mom smiled and nodded. So I quickly filled in the formula: (5-5) × 5+5 ÷ 5 = 1.

Small frog

There are twelve pests and a frog in a field. This frog is going to eat these twelve kinds of pests. The frog thought it couldn't eat any more, so he found a second frog. Two frogs split into two teams to eat pests. The first frog felt much better than before, but he was still too full, so he found a third frog, and each frog shared four kinds of pests equally. Find another one! Soon, the fourth frog entered the field. Then another frog came from other places. He ate two worms. All right! We can split it equally again, and everyone is happy. However, the fifth frog ate two more bugs. What a nuisance! It's not ordinary!

Everyone thought that the fifth frog was always making trouble, and Qi Xin Qi Xin made concerted efforts to drive it away.

Little humor

One day, Mom and Tintin went to the hospital to see Dad. Ding Ding asked, "Dad, what's wrong with you?" My father said, "Uncle Li and I drank a bottle of 60-degree white wine, which caused my father to drive into a tree and was sent here by 120 ambulance." So Tintin wrote a formula on paper and taught his father, "This is my condolences to you." Dad looked forward: 60% alcohol +60% alcohol = 120 ambulance.

One day, Tang Priest saw a stone on his way to the Western Heaven to learn Buddhist scriptures. Stone said: As long as you answer a question correctly, you will point out a shortcut without monsters. The first question is this: "How many weeks are there in 30 days? How many days are left? " "Forget it," Pig said. We'd better take the road with monsters. " Wukong asked, "What if Master eats it?" Bajie had to forget it. He didn't know what jade meant and asked Wukong, "What does jade mean?" Wukong said, "What's left is how much is left." Pig knew this and said, "Thirty days has four weeks and two days." When they got the plate, Pig said, "I didn't want to use my head just now. I will change it. " Later, Bajie became smart, too. It was his happiest day.

Interesting composition for the Spring Festival:

Today is the third day of the Year of the Monkey, and it is also the day when my little cousin is full of lights. My little cousin is my little aunt's daughter. She just turned 12 this year. According to our custom here, my uncle will buy him or her a red lantern every Spring Festival before the child is under 12 years old, and he or she will also "send a lamp" to his nephew. Cousin just turned 12 this year, and it was also the last year that Dad gave her a "lamp".

On the early morning of the third day of the first month, my whole family had breakfast. My parents and sister and I came to my sister-in-law's house with eye protection lights, new clothes, new schoolbags and many gifts for my little cousin. In order to celebrate the little cousin's "full light", her sister-in-law also invited many relatives to dinner at home. There are so many people in my sister-in-law's house today. The sofa and stool in the living room are full of guests. Adults sit together and chat, chat and watch TV. There is no place for our children to stay.

At this moment, I heard my little cousin shout, "Come, Li Bin, let's go downstairs and play!" " 1 of "ouch", my little cousin and I went downstairs with my little cousin. The downstairs of my aunt's house is just like the playground of the kindergarten. There are many things to play with. We slide, turn the horizontal bar, swing and set off firecrackers, and have a good time! Tired of playing, we went back to menstruation's house to play checkers and poker. Then, in my little cousin's room, we played the game of "the blind catch people".

The rules of this game are: first, a person is regarded as "blind" and his eyes are covered with a red scarf. All the others hid in the room and let the blind catch them. If one of them is caught, the "blind man" wins, and then let the caught person be a "blind man" again; If you can't catch it, let this "blind man" continue to catch it.

After the voting of "scissors, stone and cloth", we finally decided that our little cousin would be "blind". My little cousin and I covered my little cousin's eyes with a red scarf and pushed him out of the door. Several of us hid in the room. I hid under the table, my little cousin got under the bed, and my little cousin hid behind the curtain. When I was hiding, I shouted "one, two, three", and my little cousin pushed the door and came in.

I saw my little cousin reach out his hands and groped around for a long time. No one touched it, but he accidentally bumped his head against the wall. At this time, the little cousin hiding under the bed couldn't help laughing. Hearing the laughter, the little cousin quickly squatted down, rushed under the bed and grabbed the little cousin.

The little cousin won, and the little cousin came blind again. My little cousin is very cunning. He just saw his little cousin hiding behind the curtain. This time, as soon as he entered the door, he grabbed directly behind the curtain. Without a minute's effort, his little cousin became his prisoner. Similarly, my little cousin quickly caught me under the table.

It's my turn to catch them. I think there are only a few places to hide in this small room, which is not enough to catch you. As soon as I entered the room, I touched the bed first. No; I touched under the table again, but there was still nothing. I think it must be hidden behind the curtain. I jumped behind the curtain with the action of a hungry wolf, but it was empty. Haha, I see. They all summed up the lessons of the previous two times. They must all be hidden in the closet. So, I slowly approached the wardrobe and touched the key hanging on the wardrobe door with my hand. I turned the key and locked the cupboard door.

"Ha ha, surrender! Otherwise, we won't be able to eat today! Just waiting for you to spend the night in the closet! " As soon as my voice fell, my little cousin's cry came from the closet: "Brother, open the door quickly, we surrender!" " "

At this time, my aunt asked us to have dinner. I opened the closet, and my little cousin, my little cousin, my little cousin came out in frustration and became my prisoner. Haha, they can only catch one person at a time, and I caught three at a time. Guess how much I like this meal!

All I do is play and read. "May Day Golden Week, just as I was having a good time, I suddenly heard the voice of a beautiful woman. I don't need to look at it to know that my mother gave me another lesson. " Mom, I have finished my homework. "I pouted and answered." Then I will test you. If you do it right, I will reward you for playing for one day. "Hey, mom is coming to check my study again. I often remind my mother not to get angry, otherwise it will affect her beauty.

Mother asked a question: "There is an isosceles triangle, and the lengths of two sides are 9 cm and 4 cm respectively.". You calculate, what is the circumference of this triangle? " It's too simple for me to listen to, and I really don't want to do it, but the thought of playing for a day makes me want to do it. I know that the focus of this question is the diversity of conclusions. Well, my math teacher has said many times that this is called a new course.

So I began to analyze: "If the 9 cm side is regarded as the waist, the circumference of this triangle is 9*2+4=22 cm. If I regard the 4 cm side as the waist, then the circumference of this triangle is: 4*2+9= 17 cm. " Three times five divided by two, I proudly told my mother my thinking process. Mom smiled and said, "You think very well, but do you dare to be responsible for your own results?" You go and show me the two triangles you just considered. "

What's wrong with building a triangle as long as I'm not allowed to study? I will build it. I happily made a triangle. The first triangle was built soon, and I did the same, but strangely, I put it around, but no matter how I put it, I couldn't spell a triangle with a side length of 4 cm and a bottom of 9 cm. What's going on here? It seems that the second calculation method I analyzed earlier does not exist in life. Two sticks with a length of 4 cm and a stick with a length of 9 cm cannot be combined into a triangle. I put my head on my head and told my mother the result. My mother smiled and said, "We must pay attention to the combination of study and application, and learn to be responsible for our own results. We can't take it for granted. "

Mother dropped this sentence and went to do housework. I don't believe it. Is it because my mother gave me a special condition that other situations are impossible? So, I continued my experiment. It turns out that the combination of 4 cm and 4 cm is only 8 cm, not 9 cm long. Of course you can't spell it. It must be at least the same length. So I changed the other one to 5 cm, but it still didn't work, so I changed it to 5.5 cm. What about 5.4? I shortened it on purpose, but it doesn't matter. I seem to understand something. Two short sticks together should be longer than 9 cm. Is it true?/You don't say. So I opened the math book again and measured the three sides of many triangles. As a result, I found that both sides add up to be bigger than Fang. I still don't believe it. I drew more than 10 arbitrary triangles, measured them and added them again, and the result was still the same. I believe that the sum of any two sides of a triangle is greater than the right side. I started to get a little excited and said loudly to my mother, "Mom, you are misleading me. This is obviously impossible. How can I let it out? " My mother praised my scientific method of learning mathematics in time.

I went to school after May Day and told this story to my classmates at the class meeting. After I finished, I proudly asked everyone if there were any questions. Unexpectedly, the monitor asked loudly, "Your discovery is amazing, but we want to know why?" Now you have me stumped. Student: Do you know why? Got it. Call: 023-55**2266.