Interesting math diary-sunny on Sunday, May15th.
50 times 2
Recently, 100 has become an amazing name in the mathematics kingdom. Many people want to make friends with 100. Fortunately, 50 and 2 are chosen as its two factors by 100.
However, 50 and 2 soon quarreled, and both wanted to be the first factor.
50 said:? Little fellow, if I hadn't multiplied you by 50, you wouldn't have reached 100. I owe a lot. Let me be the first. ?
2 say:? Stupid guy, if I hadn't multiplied you by 2, you wouldn't have reached 100. I owe a lot. Let me be the first. ?
Children, do you think it is necessary for them to quarrel about this?
Interesting math diary is cloudy on Friday in February 1 Sunday.
Today, my mother took me to the shopping center. I learned a lot in the shopping center. My mother and I bought vegetables first. My mother gave it to aunt 50 yuan, the shop assistant, and she took it back to 38 yuan. Mom asked me:? How many vegetables did we buy? I never even thought about it. I blurted out: 12 yuan. ? Mother nodded happily. Later, my mother took me to buy books. A book 4 yuan 4 jiao. How much are two books? Think about it this time: 4 yuan 4 Corners +4 yuan 4 Corners =8 yuan 8 Corners, yes, it is 8 yuan 8 Corners. Yes, I got it right again! I see: Mathematics is very useful in life. Has it really come true to find the mathematical problems in life and use your brains to solve them actively? Mathematics is everywhere in life? Yes The real meaning.
How proud it is to use the knowledge learned in class to solve the math problems in life and get praise from others! That kind of excitement, that kind of happiness is beyond words.
Fun math diary SAN 65438+February 13 Sunday light rain.
Today, I saw an interesting math game in the book Interesting Mathematics. Two people bet 15. The rules of the game are: two people take turns to take pieces, and each person takes no more than four pieces at a time. Whoever gets the last piece wins.
I found it interesting after reading it, so I pestered my mother to play with me. As a result, I played three games and won them all. My mother asked me in surprise how I won, and I proudly said, Mom, this game has a knack. Do you want to learn? Let your clever daughter teach you! ? Mother said like a clever student: Then let my good daughter teach me! ? I told my mother like a teacher. In fact, this is a multiple of 5. If you want to win, you must take it later. The sum of the pieces taken by two people at a time should be equal to 5. For example, the first time you take 1, I take 4, and there is 10 left. The second time, you take 3 pieces, I take 2 pieces, and there are 5 pieces left. No matter how much you take the third time, you can only take four at most, and I will definitely take the rest, so I won. ? My mother touched my little face and said, Teacher Xiaoyue spoke very well, and Xiao Liu Tongxue understood. Thank you! ?
Dear children, you can also play this game with your parents! The number of pieces can be increased to 20 or 30, as long as the total number of pieces is a multiple of 5. Do it according to the above method, and you must be a winning general.
Mathematics is really an interesting subject. As long as you like it, you can get a lot of fun from it.
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