When I was in Central China, in a math class, the teacher gave the students a famous question: "There is a number, three places, and two; 5 digits, 5 numbers, and the remaining 3; There are seven places in seven, and there are two left. What's the date? " While everyone was thinking, Hua stood up and said, "23". His answer surprised the teacher and won his praise.

2, interesting math story 100 words

King Shiloh of Syracuse asked the goldsmith to make a crown out of pure gold. Because it is suspected that there is silver mixed in it, Archimedes is invited to identify it. When he entered the bathtub to take a bath, the water overflowed outside the bathtub, so he realized that although the weight of objects made of different materials was the same, the discharged water would be different because of their different volumes. According to this truth, it can be judged whether the crown is adulterated.

3, interesting math story 100 words

A group of monkeys are playing by the well. A gust of wind blew a monkey's hat into the well. He called 18' s friends and fished for his hats one by one from the pine trees by the well. Four monkeys don't climb trees, so they go for hats. Q: How many monkeys got their hats from the well under the tree?

4, interesting math story 100 words

In 46 BC, Julius Caesar, commander-in-chief of Rome, specified the calendar. Because he was born in July, in order to show his greatness, he decided to change July to "Julian month", and all single months were stipulated as 3 1 day, and bimonthly was 30 days. In this way, there is one more day in a year. February was the month when prisoners were executed in ancient Rome. In order to reduce the number of people executed, 1 day was reduced in February to 29 days.

5, interesting math story 100 words

The manufacturer who sells pianos has 20 pianos. One day, four children came and they all took the 20 pianos. Only Yaya suddenly calmed down and said, "We can share a point!" The aunt who sold the piano said, "Yes, I didn't think of that." Later, the star said, "How do you divide it?" Who can answer the question of the stars, Yaya said. A child named Honghong said, "I can answer that 20 divided by 4=5. So each of us can get five pianos. " Yaya, the star and the aunt said, "Great."

6, interesting math story 100 words

I went to buy stickers for my brother last night and bought eight posters. I bought a puzzle of armored soldiers. Each poster is 1 yuan * * 8 yuan, and the puzzle 3 yuan is1* * 8+3 =1yuan. I got a price for the boss, which is cheaper 1 yuan. Here it is. My mother and I went home happily.

7, interesting math story 100 words

When Cuomo was a middle school teacher, one day in class, he forgot the product of seven plus nine when calculating on the blackboard! When he hesitated for a long time, a classmate said the answer was 6 1, so he wrote it down accordingly.

How do I know that another voice said he should write 69. Of course, Cuomo knew there was only one correct answer. As for 6 1, 69 or other figures, he can't decide. So he began to analyze, saying loudly that 6 1 is a prime number, not a product, 65 is a multiple of 5, and 67 is also a prime number. 69 seems too big, so the answer is 63!

8. Interesting math story 100 words

Honeycomb is a strictly hexagonal cylinder, with a flat hexagonal opening at one end and a closed hexagonal diamond bottom at the other end, which is composed of three identical diamonds. The rhombic obtuse angle of the chassis is 109 degrees 28 minutes, and all acute angles are 70 degrees 32 minutes, which is both firm and material-saving. The honeycomb wall thickness is 0.073 mm, and the error is very small.

9. Interesting math story 100 words

Red-crowned cranes always move in groups, forming a "human" shape. The angle of the herringbone is 1 10 degrees. More accurate calculation also shows that half the angle of the herringbone-that is, the angle between each side and the direction of the crane group is 54 degrees, 44 minutes and 8 seconds! And the angle of diamond crystal is exactly 54 degrees, 44 minutes and 8 seconds! Is it a coincidence or some "tacit understanding" of nature?