1: Interesting math game
Ask your classmates to think of any three-digit number that doesn't contain the same number, but I won't tell you. You ask him to combine the three digits into a two-digit number every two digits, so that the total * * * can get six two-digit numbers, and then add up the six two-digit numbers to tell you the sum. You divide this sum by 2 in your mind and then by 1 1, and the number you get must be the sum of the three digits that this classmate originally thought.
You will find this game very interesting and easy to play. But remember, you should not only know what it is, but also use your brain to know why.
For example, the number of students thinking is 324, and the sum of six two-digit numbers composed of three numbers, 3, 2 and 4, is:
32+34+23+43+24+42= 198, 198÷2=99,99÷ 1 1=9,9=3+2+4。
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2. Numeric riddles
1. People are as big as me, but the sky is not as big as me. Type a word.
"Typing a word" means asking you to guess a word. "People are bigger than me", and it is understandable that adults will become bigger; "The sky is not as big as mine", and my understanding has become bigger without it all day. It can be seen that this word is a "one" because the middle of the word "person" has become a "big" and the word "day" has become a "big" with no horizontal line on its head.
2. Up and down, up and down, stuck in the middle. Type a word.
In the word "Shang", the lower part is a horizontal line, in the word "Xia", the upper part is also a horizontal line, and in the word "Ka", the middle part is still a horizontal line. So the answer is a horizontal word "one".
3. Heaven has land, and industry has agriculture. Type a word.
Tian Zi has two horizontal characters, and Di Zi has no two horizontal characters. I-shaped characters have two horizontal lines, while agricultural characters have no two horizontal lines. So the answer is the word "two" composed of two horizontal lines.
4. Whitening. Type a word.
Whitening soap is a kind of soap that can make white clothes whiter. What word becomes "white" when added? Seven, of course. So the answer is seven.
The above riddles are all about guessing a word, and the guessed word is a number. More riddles are related to the numbers in riddles, and the answers are not necessarily related to numbers. Let's look at a few examples.
5. Keep half and give up half. Type a word.
Leave half of the word "Bao", half of the word "Fang" and put the remaining two halves together. What words can form? It can only be "imitation". The answer is imitation.