11x11 to 19x19 multiplication formula?

11x11 equals 121 12x12 equals 144 13x13 equals 169 14x14 equals 196 15x15 equals 225 16x16 equals 256 17x17 equals 289 18x 18 equals 324 19x19 equals 361

The multiplication of 11 times is:

11x11=121 11x12=132 11x13=143 11x14=154 11x15=165 11x16=176 11x17=187 11x18=198 11x19=209

The multiplication of 12 times is:

12x12=144 12x13=156 12x14=168 12x15=180 12x16=192 12x17=204 12x18=216 12x19=228

The multiplication of 13 times is:

13x13=169 13x14=182 13x15=195 13x16=208 13x17=221 13x18=234 13x19=247

The multiplication of 14 times is:

14x14=196 14x15=210 14x16=224 14x17=238 14x18=252 14x19=266

The multiplication of 15 times has:

15x15=225 15x16=240 15x17=255 15x18=270 15x19=285

The multiplication of 16 times is:

16x16=256 16x17=272 16x18=288 16x19=304

The multiplication of 17 times is:

17x17=289 17x18=306 17x19=323

The multiplication of 18 times is:

18x18=324 18x19=342

The multiplication of 19 times is:

19x19=361

This doesn't seem to have a multiplication formula, it seems to be a memorization process, you just memorize it, 11 19 are all multiplied.

You can use the round-minus zero method.

For example, 11 14=, you can calculate 10 14 to get 140, plus 1 14=14, and the sum is 154

19 * 19 =, you can calculate 10 19 to get 190, plus 9 19 = 171, and the sum is 361

Or. 19*19=, you can calculate 20 19 to get 380, and then subtract 1 19=19, the difference is 361

The multiplication formulas that China now memorizes are called Hinayana formulas, which are from one to nine.

In India, that's going to go from 1 to 19.

So you can look it up from the internet.

Learning methods are important! Problems that can be solved on your own, try not to ask questions.

It won't take long to compile your own multiplication table.

You list this first, then find the pattern yourself, read it a few times and use it more to remember.

11x11 to 19x19Multiplication formulasThe rule is as follows: wide slag

The sum of the digits on the odd digits is the same as the even digits or the difference of 11 digits.

The product of 11 multiplied by an odd number is an odd sail number, and the product of 11 multiplied by an even number is an even number.

The number in the single digit is the same as the single digit of the other factor.

The number on the decentile brother is the sum of the single digits of 1 and the other factor.

Introduction: Multiplication is a shortcut to add up the same numbers.

The result is called the product, and "x" is the multiplier sign. From a philosophical point of view, multiplication is the result of a qualitative change caused by the quantitative change of addition. The multiplication of integers (including negative numbers), rational numbers (fractions), and real numbers is defined by the systematic generalization of this basic definition.

Multiplication can also be thought of as calculating objects arranged in a rectangle (integer) or finding the area of a rectangle whose side length is given. The area of the rectangle does not depend on which side is measured first, which illustrates the swap property. The result of the two measurements is a new type of measurement, for example, multiplying the lengths of both sides of a rectangle to give its area, which is the subject of dimensional analysis.

The multiplication formula from 11x11 to 19x19 follows:

The sum of the digits on the odd digits is the same as the even digits or the difference of 11 digits.

The product of 11 multiplied by an odd number is an odd number, and the product of 11 multiplied by an even number is an even number.

The number in the single digit is the same as the single digit of the other factor.

The number in the ten digit is the sum of the single digits of 1 and another factor.

Multiplication propertiesMultiply the product of several numbers by a number to multiply any factor in the product by this number, and then multiply it by other numbers, for example: (25 3 9) 4=25 4 3 9=2700.

Multiplying the difference between two numbers by one number allows the subtracted number and the subtracted number to be multiplied by the number, and then the resulting product is subtracted, for example: (137-125) 8=137 8-125 8=96.

The contents of the multiplication formula table from one to nine are: 1 1=1, 1 2=2, 1 3=3, 1 4=4, 1 5=5, 1 6=6, 1 7=7, 1 8=8, 1 9=, 2 3=6, 2 4=8, 2 6=12, 2 7=14, 2 8=16, 2 9=18.

The origin of "Little Ninety-Nine":

The "little ninety-nine" mantra that primary school students learn starts from "one by one gets one" and ends with "ninety-nine eighty-one", but in ancient times, it was reversed, starting from "ninety-nine-eighty-one" and ending with "two-two-two-four". Because the first two words of the formula are "ninety-nine", people refer to it as "little ninety-nine". It wasn't until about the turn of the century that it was reversed like this, "one by one, ninety-nine-eighty-one."

China used the "ninety-nine formula" earlier. In books such as "Xunzi", "Guanzi", "Huainanzi", and "Warring States Policy", you can find sentences such as "three nine twenty-seven", "six eight forty-eight", "four eight thirty-two", "six six thirty-six" and so on. It can be seen that as early as the "Spring and Autumn Period" and "Warring States", "Ninety-Nine Multiplication Songs" has begun to become popular.

The above content refers to: Encyclopedia - 99 Multiplication Formula Table.

Ninety-nine multiplication formulas:

The "little ninety-nine" mantra that primary school students learn starts from "one by one gets one" and ends with "ninety-nine eighty-one", but in ancient times, it was reversed, starting from "ninety-nine-eighty-one" and ending with "two-two-two-four". Because the first two words of the formula are "ninety-nine", people refer to it as "little ninety-nine". It wasn't until about the turn of the century that it was reversed like this, "one by one......Ninety-nine-eighty-one".

You can ask your elementary school physical education teacher.