Nine is more than 20 who is 40 less than eight

9 is 20% more, and it takes 9 divided by (1+20%)

8% less than 40%. It takes 8 times (1-40%)

90% more; -32 is 40 less than eight.

Algorithms. 1. The algorithm of addition and subtraction.

1. Integer: 1) Alignment of the same digits.

2) Count from the single digit.

3) In addition, if there are dozens full, go to the higher one; When the subtraction is not enough, it will be subtracted from the higher digit by 1 when 10 and the original digit are added and then subtracted.

2. Decimals: 1) Decimal point alignment (i.e., alignment of the same digits);

2) Calculate according to the rule of integer addition and subtraction;

3) Align the decimal point on the horizontal line and point the decimal point on the count;

Second, the operation of multiplication.

1. Integer. 1) Multiply by the first factor by the number on each of the second factor;

2) Multiply by the digit of the second factor, and the last digit of the number is aligned with the digit of the second factor;

3) Add up the numbers that have been multiplied several times;

2. Decimals. 1) Find the product first according to the law of integer multiplication;

2) Look at how many decimal places there are in the factor, and count the decimal points from the right side of the product;

3. The algorithm of division.

1. Integer. 1) Divide from the high of the dividend;

2) If the divisor is a few digits, look at the first few digits of the dividend, if it is not enough to divide, you should look at one more number;

3) Except for which one should be written on which one;

4) The remainder of each division must be smaller than the divisor;

5) After finding the highest digit of the quotient, if the digit of the dividend is not enough quotient 1, write 0 on which digit;

2. Decimals. 1) When the divisor is an integer, it is calculated according to the integer division, and the 4 and number points of the quotient should be aligned with the decimal point of the dividend;

2) When the divisor is a decimal, it is first converted into a decimal division in which the divisor is an integer, and then calculated according to the division of the outer number where the divisor is an integer;

Summary. 1 9 is 10, and 9 less is 20 less 2.

How to do this question.

A few nines is a few dozen or less.

1 9 is 10, and 9 less is 20 less 2.

It's the first few and the last one, it's the same.

So the answer above is true or false.

The vertical column on the far right should be filled in: 91827364554637281 everything else is right, right, teacher.

Yes. Everything else is right.

40*9=360, so 360 40=9, sometimes it's okay to compare.

Look at it as division.

x:40=9:y

There are indefinite equations, and there are countless solutions that fail. and cracked.

Just make sure xy=40 9=360.

For example: Absolutely closed.

It's simple, you subtract 9 from 30 and the answer is 21. So 30 less than 21.

Solution: 9 is less than 30 acres of pure Qi (21).

It is known how much less demand out of 9 than 30.

x is 8 less than y, i.e. y - 8 = x

9 is less than 30 numbers.

Answer: Do 9 sen 21 less than 30

Solution 1: 9*20+35=215

Solution grip 2: Let the number of slow ants be x

then x-35 = 9*20

x-35=180

x=215

1x9=9=10-1

2x9=18=20-2

3x9=27=30-3

4x9=36=40-4

9 n=10n-n (n is an unknown number, and n≠0) a few nines, which is a few tens, minus a few.

Summary. Hello, the number 9 more than 10 is 19, -2 is 10 less than 8, 20 is 4 more than 16. The specific calculation process is as follows: the number of 9 more than 10 is 10 + 9 = 19, which is less than 8, 10 is 8-10 = -2, 20 is more than 16, and 20-16 = 4

How many are 9 more than 10, how many are 10 less than 8, and how many more are 20 than 16. How do I do this question, please?

How do you do these three questions?

I'd like to ask you about it.

Hello, the number 9 more than 10 is 19, -2 is 10 less than 8, 20 is 4 more than 16. The specific calculation process is as follows: more than 10, the number of 9 is 10 + 9 = 19, a few less than 8, 10 is 8-10 = -2, 20 is more than 16, is 20-16 = 4

Extended Material: These questions examine addition and subtraction in mathematics. Addition is one of the four basic operations, which refers to the calculation of combining two or more numbers and quantities into one number or quantity.

The symbol to express addition is the plus sign "+", when adding with a plus sign, subtraction is one of the four operations, and the operation of subtracting another quantity from one quantity is called subtraction; It is known that the sum of two additions and one of them is like a thing, and the calculation of the other addition is called Zao Xian to do subtraction. The symbol for subtraction is (-) pronounced as a minus sign.

289 is ten less than Bu Laoyu 299 and 10 more than 279, and the column formula is: 289 + 10 = 299

The number with one more than 2799 is 2800

The column type is as follows:

289 is 10 less than 299, 10 more than 279, and 1 more macro than 2799 is 2800.

289 is ten less than 299, 279 is ten more, and the number one more than 2799 is 2800