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 | 9 | 8 | 3 | 8 | 2 | 0 | |
| - | 3 | 9 | 1 | 9 | 5 | 0 | 9 |
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 (2) in the next number place which becomes (1) and get (10).
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 10 | ||||||
| 3 | 9 | 8 | 3 | 8 | 2 | 0 | |
| - | 3 | 9 | 1 | 9 | 5 | 0 | 9 |
Subtract the numbers in the ones column from the top number:
10-9=1
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 10 | ||||||
| 3 | 9 | 8 | 3 | 8 | 2 | 0 | |
| - | 3 | 9 | 1 | 9 | 5 | 0 | 9 |
| 1 |
Subtract the numbers in the tens column from the top number:
1-0=1
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 10 | ||||||
| 3 | 9 | 8 | 3 | 8 | 2 | 0 | |
| - | 3 | 9 | 1 | 9 | 5 | 0 | 9 |
| 1 | 1 |
Subtract the numbers in the hundreds column from the top number:
8-5=3
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 1 | 10 | ||||||
| 3 | 9 | 8 | 3 | 8 | 2 | 0 | |
| - | 3 | 9 | 1 | 9 | 5 | 0 | 9 |
| 3 | 1 | 1 |
Because the upper digit (3) in the thousands 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 (13).
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 7 | 13 | ||||||
| 1 | 10 | ||||||
| 3 | 9 | 8 | 3 | 8 | 2 | 0 | |
| - | 3 | 9 | 1 | 9 | 5 | 0 | 9 |
| 3 | 1 | 1 |
Subtract the numbers in the thousands column from the top number:
13-9=4
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 7 | 13 | ||||||
| 1 | 10 | ||||||
| 3 | 9 | 8 | 3 | 8 | 2 | 0 | |
| - | 3 | 9 | 1 | 9 | 5 | 0 | 9 |
| 4 | 3 | 1 | 1 |
Subtract the numbers in the ten thousands column from the top number:
7-1=6
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 7 | 13 | ||||||
| 1 | 10 | ||||||
| 3 | 9 | 8 | 3 | 8 | 2 | 0 | |
| - | 3 | 9 | 1 | 9 | 5 | 0 | 9 |
| 6 | 4 | 3 | 1 | 1 |
Subtract the numbers in the hundred thousands column from the top number:
9-9=0
| Place value | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 7 | 13 | ||||||
| 1 | 10 | ||||||
| 3 | 9 | 8 | 3 | 8 | 2 | 0 | |
| - | 3 | 9 | 1 | 9 | 5 | 0 | 9 |
| 0 | 6 | 4 | 3 | 1 | 1 |
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 |
| 7 | 13 | ||||||
| 1 | 10 | ||||||
| 3 | 9 | 8 | 3 | 8 | 2 | 0 | |
| - | 3 | 9 | 1 | 9 | 5 | 0 | 9 |
| 0 | 0 | 6 | 4 | 3 | 1 | 1 |
The solution is: 64,311
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