How to eliminate the floating point arithmetic error, how to solve the table floating point error

1.Because binary values can accurately represent integers (which can be verified using integer conversion to binary), you can multiply decimal numbers by 10 or 100 and so on to become an integer, then do the operation, and finally divide by 10 or 100 and so on to get the result;

2.The best approximation of the result is obtained by intercepting the number of significant decimal places, etc., and then processing it.

3.For decimal values that can be represented by binary values of finite length, you can use a data type that stores bits greater than its length.

Due to floating-point numbers.

The characteristics of storage, decimal decimals, the vast majority of which cannot be represented as finite binary.

Decimals, so there must be errors in floating-point arithmetic in computers, and there is no way to avoid it. If it is to be avoided, for example, the operation of the renminbi does not involve three decimal places, then all the currency values of the renminbi can be converted into integers in cents, so as to avoid arithmetic errors.

I want to go to Shuyu, if my budget is poor, this may be one of the advanced calculators that can be selected, if you choose it, you can.

How do you get rid of floating-point errors, in fact, you have to eliminate this error, and this accuracy is relatively high, and you have to be naughty first.

How to eliminate the error of floating-point arithmetic requires a certain formula to calculate.

When performing calculations in Excel, they are converted into binary calculations in the computer and then retain the values, so there will be errors. Workaround:

1. Open Excel**, enter the number in cell A1, enter the number in cell B1".

2. Enter the calculation formula in cell C1: =(round(a1,2))+round(b1,2), which means use the round function to ensure that the decimal place is 2 digits.

3. Click Enter to generate the calculation result of the function formula, and the value obtained is ".

4. Copy cell C1, right-click in C2 and select "Paste Value".

5. After pasting, you can see that the calculated value is the last two decimal places, and there is no error.

In Excel, due to the accuracy of floating-point operations, sometimes there will be a certain floating-point error in the calculation process. If you need to get rid of these floating-point errors, you can do the following:1

Use Excel functions: You can use functions in Excel to solve floating-point error problems, such as round, roundup, and rounddown. These functions round values to a specified number of decimal places, eliminating floating-point errors.

For example, you can use the function "=round(a1,2)" for column A data, rounding the values to two decimal places. 2.Change cell formatting

You can also change the cell format to remove the floating-point error, and format the cell as text or custom. Specifically, you can enter "without quotation marks" in the cell bar, and then format the cell as text or custom format "0to remove the floating-point error.

3.Custom VBA functions: If you need to process large amounts of data, you can write VBA functions to solve floating-point error problems.

With a custom function, you can convert a value to a string, and then convert the string back to a value, so as to remove the floating-point error. In summary, there are a number of ways to remove floating-point error in Excel, depending on the characteristics of the data and processing needs.

The root cause of this is that the binary 01** used by computers does not accurately represent some decimal data with decimal places.

To convert a decimal value to a binary value, you need to use the following calculation method:

1.Integer part: Divide the integer by 2 continuously, take the remainder, and then divide the quotient by 2 again until the quotient is equal to 0. Then put the resulting remainders in reverse order. Abbreviation"Divide by 2 remainder method"。

2.Decimal part: Convert decimal decimal to binary decimal number, adopted"Multiply by 2 and round up, in order"Law.

Multiply 2 by decimal decimal to take out the resulting integer part, multiply 2 by the remaining decimal part, and then take out the integer part of the product until the decimal part of the product is 0 or the required accuracy is reached. Then the integer parts taken out are arranged in order, that is, the integer part taken out first is used as the high position of the binary decimal place, and the integer part taken out later is taken as the low significant bit. Abbreviation"Multiply by 2 to round it integer"。

3.Decimal numbers containing decimals are converted to binary, integers and decimal parts are converted separately, and then added.

Hello dear, in Excel, there will be a certain floating-point error because the floating-point number is stored in binary form when it is stored internally. To get rid of this error, you can use the following methods: 1. Use the rounding function:

In Excel there is a round function that rounds a number to a specified number of digits. For example, if you want to keep two decimal places and round to the nearest value, you can use the following formula: =round(a1,2).

where a1 is the cell to be rounded. 2. Format cells as text: Set the cell book back format to text, excel will not automatically convert it to numbers, thus avoiding floating-point error.

The specific operation is as follows: select the cells to be formatted, right-click the cells, select "Format Cells", select the "Text" format in the pop-up dialog box, and click the "OK" button. 3. Use Exact Calculation Tools:

If you need to perform high-precision calculations and want to eliminate floating-point error, you can use Excel's exact calculation tools such as , bignumber, and so on. These tools provide more accurate calculations and can avoid the problem of floating-point error. The above are a few ways to remove floating-point errors in Excel, and you can choose the method that suits you according to the actual situation.

Summary. Hello dear, in Excel, floating-point error is often caused by numerical precision issues. There are two ways to remove floating-point errors

Hello. After the decimal point is 1 digit.

Good. But 1,000 single digits want to be added to become 999999

I don't know how to fix it.

Hello dear, in Excel, floating-point error is often caused by numerical precision issues. You can dig a hole to use the following two methods to remove the floating point missales

1.Format cells: Select a cell or a group of cells, and right-click to select the "Format Cells" option.

In the Number tab, select the Number class, and then set the number of decimal places you want. This method reduces the number of digits of small nuclear dust, thereby reducing floating-point error.

The error is 2Use the round function: The round function rounds the number of buried changes to the specified number of decimal places. For example, you can make Chunkuan round the value of cell A1 to 2 decimal places with the following formula:

Only one decimal place is required.

Dear, if you need to eliminate floating-point error in Excel, you can try the following method:

1.Use the round function: Use the round function to round the value to the desired number of decimal places. For example, you can round the value of Qi to 10 decimal places and use the following formula: =round(a1,10).

2.Use the trunc function: Use the trunc function to truncate the value to the desired number of decimal places. For example, you can truncate the value of the wild macro rent to 10 decimal places and use the formula of the following omen: =trunc(a1,10).

3.Use the fixed function: Use the fixed function to format the value to a specified number of decimal places. For example, you can format a value to 10 decimal places to make the balance use the following formula: =fixed(a1,10).

Dear, if you only need to round the number to one decimal place, you can use the round function in excel to achieve it. The round function rounds the number to the nearest specified number of digits. Here's an example of rounding a number to one decimal place:

Assuming you want to round a number to one decimal place, you can use the following formula: =round(,1) This formula will be returned quietly because it rounds the number to the nearest decimal place.

Note that the round function rounds the numbers to the nearest number. If you want to force a round-down, use the trunc function instead. For example, to talk about Plex Mega, the following formula rounds the number down to one decimal place: =trunc(

The formula will return because it multiplies the Jingwang number by 10, then uses the trunc function to truncate the result of the conjuring to an integer, and finally divides it by 10 to get the result of rounding down.

At first glance, the following report is an ordinary one. It sums the excel sheet by product and region only, and then cross-calculates the results.

The body of the report uses a formula similar to the one shown in the cell mu....

f3: = sumifs(**[value], **[region], $e 3, **[product], f$2).

sumifs uses the following syntax:

sumifs（sum_range，criteria_range1，criteria1，criteria_range2，criteria2，..

A well-structured version of the report adds tests to the totals of rows and columns that ensure that the report doesn't ignore new areas or products that have been added to the source data since the last time the report was generated.

Unfortunately, inaccurate floating-point numbers in Excel can make it difficult to get footing and straddle feet.