Solution - Long subtraction
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 3 | 2 | 0 | 1 | 7 | 5 | 0 | |
| - | 3 | 0 | 5 | 9 | 0 | 0 | 1 |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the ones column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (10).
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 10 | ||||||
| 3 | 2 | 0 | 1 | 7 | 5 | 0 | |
| - | 3 | 0 | 5 | 9 | 0 | 0 | 1 |
Subtract the numbers in the ones column from the top number:
10-1=9
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 10 | ||||||
| 3 | 2 | 0 | 1 | 7 | 5 | 0 | |
| - | 3 | 0 | 5 | 9 | 0 | 0 | 1 |
| 9 |
Subtract the numbers in the tens column from the top number:
4-0=4
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 10 | ||||||
| 3 | 2 | 0 | 1 | 7 | 5 | 0 | |
| - | 3 | 0 | 5 | 9 | 0 | 0 | 1 |
| 4 | 9 |
Subtract the numbers in the hundreds column from the top number:
7-0=7
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 10 | ||||||
| 3 | 2 | 0 | 1 | 7 | 5 | 0 | |
| - | 3 | 0 | 5 | 9 | 0 | 0 | 1 |
| 7 | 4 | 9 |
Because the upper digit (1) 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 (11).
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 9 | 11 | |||||
| 4 | 10 | ||||||
| 3 | 2 | 0 | 1 | 7 | 5 | 0 | |
| - | 3 | 0 | 5 | 9 | 0 | 0 | 1 |
| 7 | 4 | 9 |
Subtract the numbers in the thousands column from the top number:
11-9=2
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 9 | 11 | |||||
| 4 | 10 | ||||||
| 3 | 2 | 0 | 1 | 7 | 5 | 0 | |
| - | 3 | 0 | 5 | 9 | 0 | 0 | 1 |
| 2 | 7 | 4 | 9 |
Subtract the numbers in the ten thousands column from the top number:
9-5=4
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 9 | 11 | |||||
| 4 | 10 | ||||||
| 3 | 2 | 0 | 1 | 7 | 5 | 0 | |
| - | 3 | 0 | 5 | 9 | 0 | 0 | 1 |
| 4 | 2 | 7 | 4 | 9 |
Subtract the numbers in the hundred thousands column from the top number:
1-0=1
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 9 | 11 | |||||
| 4 | 10 | ||||||
| 3 | 2 | 0 | 1 | 7 | 5 | 0 | |
| - | 3 | 0 | 5 | 9 | 0 | 0 | 1 |
| 1 | 4 | 2 | 7 | 4 | 9 |
Subtract the numbers in the millions column from the top number:
3-3=0
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 9 | 11 | |||||
| 4 | 10 | ||||||
| 3 | 2 | 0 | 1 | 7 | 5 | 0 | |
| - | 3 | 0 | 5 | 9 | 0 | 0 | 1 |
| 0 | 1 | 4 | 2 | 7 | 4 | 9 |
The solution is: 142,749
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