Soluzione - Long subtraction
29.999
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 3 | 0 | 0 | 0 | 1 | |
| - | 2 | ||||
2. Subtract the numbers using long subtraction method
Because the upper digit (1) in the ones column is too small to get a positive difference, borrow 1 from the number to the left (3.000) which becomes (2.999) and get (11).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 2 | 9 | 9 | 9 | 11 | |
| 3 | 0 | 0 | 0 | 1 | |
| - | 2 | ||||
Subtract the numbers in the ones column from the top number:
11-2=9
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 2 | 9 | 9 | 9 | 11 | |
| 3 | 0 | 0 | 0 | 1 | |
| - | 2 | ||||
| 9 |
Write 9 in the tens place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 2 | 9 | 9 | 9 | 11 | |
| 3 | 0 | 0 | 0 | 1 | |
| - | 2 | ||||
| 9 | 9 |
Write 9 in the hundreds place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 2 | 9 | 9 | 9 | 11 | |
| 3 | 0 | 0 | 0 | 1 | |
| - | 2 | ||||
| 9 | 9 | 9 |
Write 9 in the thousands place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 2 | 9 | 9 | 9 | 11 | |
| 3 | 0 | 0 | 0 | 1 | |
| - | 2 | ||||
| 9 | 9 | 9 | 9 |
Write 2 in the ten thousands place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 2 | 9 | 9 | 9 | 11 | |
| 3 | 0 | 0 | 0 | 1 | |
| - | 2 | ||||
| 2 | 9 | 9 | 9 | 9 |
The solution is: 29,999
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this