Question

Объясните как выполнить вычитание десятичных дробей с разным количеством знаков после запятой

Answer 1

вообщем чтобы посчитать столбиком ты запиши запидую под запитую...например:123,123+ 12,12 то мы получим 145,243...незнаю как ещё объяснить..

Answer 2

Subtracting Decimal Fractions with Different Decimal Places

To subtract decimal fractions with different numbers of decimal places, follow these steps:

1. Align the Decimals: - Align the decimal points of the numbers.

2. Add Zeroes: - Add trailing zeroes to the number with fewer decimal places to make the decimal places equal in both numbers.

3. Subtract as Whole Numbers: - Subtract the numbers as if they were whole numbers.

4. Place the Decimal Point: - Place the decimal point in the result directly below the other decimal points.

Let's illustrate this with an example:

Subtract 7.42 from 9.932.

1. Align the Decimals: ``` 9.932 -7.420 ```

2. Add Zeroes: - Since 7.42 has two decimal places and 9.932 has three, add a zero to 7.42 to make the decimal places equal: ``` 9.932 -7.420 ```

3. Subtract as Whole Numbers: ``` 9.932 -7.420 ------ 2.512 ```

4. Place the Decimal Point: - The result is 2.512.

So, 9.932 - 7.42 = 2.512.

This method ensures that the decimal fractions are subtracted accurately, regardless of the number of decimal places in each number.