Soluzione - Long subtraction
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 2 | 0 | 5 | 3 | 8 | 1 | |
| - | 3 | 7 | 2 | 5 | 4 | |
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 digit (8) in the next number place which becomes (7) and get (11).
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 7 | 11 | |||||
| 2 | 0 | 5 | 3 | 8 | 1 | |
| - | 3 | 7 | 2 | 5 | 4 | |
Subtract the numbers in the ones column from the top number:
11-4=7
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 7 | 11 | |||||
| 2 | 0 | 5 | 3 | 8 | 1 | |
| - | 3 | 7 | 2 | 5 | 4 | |
| 7 |
Subtract the numbers in the tens column from the top number:
7-5=2
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 7 | 11 | |||||
| 2 | 0 | 5 | 3 | 8 | 1 | |
| - | 3 | 7 | 2 | 5 | 4 | |
| 2 | 7 |
Subtract the numbers in the hundreds column from the top number:
3-2=1
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 7 | 11 | |||||
| 2 | 0 | 5 | 3 | 8 | 1 | |
| - | 3 | 7 | 2 | 5 | 4 | |
| 1 | 2 | 7 |
Because the upper digit (5) in the thousands column is too small to get a positive difference, borrow 1 from the number to the left (20) which becomes (19) and get (15).
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 9 | 15 | ||||
| 7 | 11 | |||||
| 2 | 0 | 5 | 3 | 8 | 1 | |
| - | 3 | 7 | 2 | 5 | 4 | |
| 1 | 2 | 7 |
Subtract the numbers in the thousands column from the top number:
15-7=8
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 9 | 15 | ||||
| 7 | 11 | |||||
| 2 | 0 | 5 | 3 | 8 | 1 | |
| - | 3 | 7 | 2 | 5 | 4 | |
| 8 | 1 | 2 | 7 |
Subtract the numbers in the ten thousands column from the top number:
9-3=6
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 9 | 15 | ||||
| 7 | 11 | |||||
| 2 | 0 | 5 | 3 | 8 | 1 | |
| - | 3 | 7 | 2 | 5 | 4 | |
| 6 | 8 | 1 | 2 | 7 |
Write 1 in the hundred thousands place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 9 | 15 | ||||
| 7 | 11 | |||||
| 2 | 0 | 5 | 3 | 8 | 1 | |
| - | 3 | 7 | 2 | 5 | 4 | |
| 1 | 6 | 8 | 1 | 2 | 7 |
The solution is: 168,127
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this