In the distance, a magnificent palace broke through the hazy blue mist and stood proudly on a steep mountain peak. This scene is both majestic and mysterious. Tintin and Dongdong are very excited. They finally found the magical land of Vicky. In this isolated country, everyone is an excellent magician, and of course, they are also good at math.
Tintin and Dongdong came to Vichy. Dongdong was afraid at this time, because he always didn't listen carefully in class and didn't finish his homework after class, and everyone at Vichy was proficient in mathematics. Dongdong is really afraid of being cheated by Vichy's people. But what's the use of being afraid now? At this time, Tintin was very happy, because he was good at math.
Vichy's streets are very lively. Some people sell cloth, some vegetables and some meat ... Tintin and Dongdong suddenly feel hungry, so they run to a bakery.
Although the bakery sells bread, the bread is free. "Then how can I eat bread?" Tintin and Dongdong asked the owner of the bakery. "Did you see a math problem written on the bread? Didn't you say that if you solve this problem, the bread will be yours? " "ah! It turns out that eating bread is so simple! " Ding Ding said that he grabbed the bread and looked at the topic on it. After a while, it came out, but Dongdong standing by couldn't figure it out. Tintin finished the problem, picked up the bread and left. Dongdong followed Tintin and asked Tintin how to do the questions on his bread. Ding Ding said: "The math problem is this:' How many meters can four looms weave in five hours, and how many meters can 24 looms weave in eight hours? "Let's look at the first condition. The first condition tells us that four looms can weave 2600 meters of cloth in five hours, so we can find out how many meters of cloth 1 loom can weave in 1 hour, that is,' 2600 divided by 5 equals 520 (meters), and 520 divided by 4 equals 130 (meters). We have worked out 1 loom, 1 hour to weave130m cloth, and the next step is very simple. Think for yourself! "
The next step is really simple. We'll calculate it later.
Tintin and Dongdong visited many places in Vichy and met many math problems. Dongdong knows the importance of mathematics. After returning home, Dongdong studied mathematics seriously, and the more he studied, the better!
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Good friend
Recently, a new waiter came to the "Mathematics Store". It is Xiao's Four.
One day, Little "3" went to the math shop and bought a pencil. The little "4" said, "You have to pay 1 54 yuan."
Little "3" paid 1 yuan 50 cents and asked, "How can I pay 4 cents?" Little "4" quickly said, "You don't have to pay the 4 cents." Little "3" asked doubtfully, "So you're not going to suffer?" "No, this is a rule of our shop, called" rounding ". Anything less than 4 cents is discarded. If it is more than 5 cents, it will be 1 cent. " Little "4" kindly explained. Little "3" said happily, "Thank you, that's very kind of you!"
"Yes, I like 4 very much, too." "25" ran over and said, "Because 25×4= 100, it is relatively simple to calculate, for example, 25×87×4=25×4×87, isn't it fast and simple to calculate? ! "
"Yes, really fast and easy. I also like 4. " It turned out to be "29" and "25" and quickly asked, "Hey, how can you like' 4'?" "No.29" said unhurriedly, "You don't know this. Generally speaking, February is 28 days. February is only 29 days when the Gregorian calendar year is a multiple of 4. It's only my turn once every four years. Sure, I like' 4'. However, the Gregorian calendar year is one hundred, and it must be a multiple of 400. There are only 29 days in February. This year is called leap year. "
"Ah, the use of' 4' is really great!" "25 exclaimed.
This "4" waiter is really a very gentle and likable waiter.