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If you discover and memorize the features, it is easy to memorize the structure of the entire table in your mind and deepen your image memory.
1. The multiplication formula table is also called the "ninety-nine multiplication formula table", as the name suggests, this table is composed of nine rows and nine columns. Moreover, the whole mantra table resembles a staircase shape.
2. When reciting the multiplication formula, you should recite it line by line, and the first word at the beginning of each line must start with "one", a total of nine lines, and each line begins with "one". In this way, you won't be confused when reciting.
3. It should also be noted that the first formula of each column is related to the row in which it is located. What I just said is that the first word in each column starts with "one", and the second word is the number of lines it is in, just look at the position of the box as shown in the figure. Pass.
The two characteristics of two and three can easily remember the first formula in each line.
4. When reciting the multiplication formula, the last formula at the end of each line is the formula obtained by multiplying the same number, for example, if you memorize to the third line, you must multiply three by three as the last formula, and when you memorize the fifth line, you should multiply five by five as the end of the line. Knowing the end of each line, you immediately reflect the beginning of the downward movement.
5. Discovered such a rule, that is, horizontally, the second word of each line is the same, for example, in the second line, all the second words are "two", and in the fourth line, all the second words are "four", so it will be easier to remember.
6. You will also find a rule, that is, the number of each column, the number of differences from top to bottom, is exactly the number of columns where the column formula is located, for example, in the first column, from top to bottom in order +1, in the third column, from top to bottom in order +3, mastering this law is more helpful for memorization and memory.
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Here are a few ways to quickly memorize a multiplication table:
The first is the game method.
1) A game in which the product of two factors is known.
Here's how to do this: Ask one student to name a two-digit number at random, and the other student will multiply the ten-digit number of the two-digit number by the single-digit number, and calculate the result, if the result is another two-digit number, multiply the ten-digit number of the two-digit number by the single-digit number until the result is a single digit or a difference of zero.
2) A game in which the product of two factors is known. To do this, one student says a product (the product of two single-digit numbers) and the other says the corresponding formula.
For example, one student says "36", and the other says: "Forty-nine thirty-six", "Six-six-thirty-six".
The second is to remember according to the ninety-nine multiplication table.
1) Vertical back, this method has a rule, a few vertical columns, gradually increase a few, can be according to this law to help memory.
2) Horizontal back, this method also has a rule, the first few lines, the latter sentence is a few more than the previous sentence. For example, in the third row, 6 is 3 bigger than 3, and 9 is 3 bigger than 6.
3) Bend the back, so that one of the characteristics of the back is that there are nine sentences from one to nine formulas, and the number of formulas will gradually increase by a few.
The third is the special memory method.
9 finger memory game put your hands flat, when memorizing the mantra "one nine gets nine", bend the little finger of the left hand, and there are 9 fingers on the right side of the bent finger, this "9" means that the product is 9; When memorizing "two hundred and ninety-eight", bend the ring finger of the left hand, and on the left side of the bent finger, there is a finger, this "1" represents the number 1 on the tenth place, and the right side of the bent finger has 8 fingers, and the "8" represents the number 8 on the single place, that is, "two ninety-eight", and so on. Counting from left to right, the first few fingers are bent to indicate the number of nines, the left of the fingers is bent to represent the number on the tenth digit of the product, and the right side is to represent the number on the single digit of the product.
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The multiplication formula is as follows:
The memorization of the multiplication formula table is divided into the following four stages:
First: Observe and fully discover the characteristics of the multiplication formula, so that when you memorize the order of the taking, you can continue to recall and try regularly when you can't remember.
Second: memory, according to the law in the order of many times, repeated, there is no shortcut here.
Third: flexible calling, randomly say a certain elimination carrying, shuffle the order, ask which one to say which, and gradually be able to do it like a computer program, which can be called at any time.
Fourth: flexible application.
Uh, this one I suggest you look up the calculator for this one is faster.
The multiplication formula table is a simple multiplication table that starts from "one by one to get one" and ends with "ninety-nine eighty-one", which is derived from the multiplication formula and is convenient for multiplication calculation. >>>More
Memorize them all and copy them repeatedly, and memorize them every day and copy them every day.
For example, the multiplication formula for nine, twenty ninety. >>>More
You still can't memorize the ninety-nine multiplication table, how did you go to the third year of junior high school, then memorize it, or an hour, you will memorize it to the fullest.