Solution - Long subtraction
85,290,810
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 5 | 2 | 9 | 9 | 6 | 6 | 5 | |
| - | 8 | 8 | 5 | 5 | ||||
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
5-5=0
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 5 | 2 | 9 | 9 | 6 | 6 | 5 | |
| - | 8 | 8 | 5 | 5 | ||||
| 0 |
Subtract the numbers in the tens column from the top number:
6-5=1
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 5 | 2 | 9 | 9 | 6 | 6 | 5 | |
| - | 8 | 8 | 5 | 5 | ||||
| 1 | 0 |
Because the upper digit (6) in the hundreds column is too small to get a positive difference, borrow 1 from the digit (9) in the next number place which becomes (8) and get (16).
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 16 | |||||||
| 8 | 5 | 2 | 9 | 9 | 6 | 6 | 5 | |
| - | 8 | 8 | 5 | 5 | ||||
| 1 | 0 |
Subtract the numbers in the hundreds column from the top number:
16-8=8
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 16 | |||||||
| 8 | 5 | 2 | 9 | 9 | 6 | 6 | 5 | |
| - | 8 | 8 | 5 | 5 | ||||
| 8 | 1 | 0 |
Subtract the numbers in the thousands column from the top number:
8-8=0
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 16 | |||||||
| 8 | 5 | 2 | 9 | 9 | 6 | 6 | 5 | |
| - | 8 | 8 | 5 | 5 | ||||
| 0 | 8 | 1 | 0 |
Write 9 in the ten thousands place.
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 16 | |||||||
| 8 | 5 | 2 | 9 | 9 | 6 | 6 | 5 | |
| - | 8 | 8 | 5 | 5 | ||||
| 9 | 0 | 8 | 1 | 0 |
Write 2 in the hundred thousands place.
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 16 | |||||||
| 8 | 5 | 2 | 9 | 9 | 6 | 6 | 5 | |
| - | 8 | 8 | 5 | 5 | ||||
| 2 | 9 | 0 | 8 | 1 | 0 |
Write 5 in the millions place.
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 16 | |||||||
| 8 | 5 | 2 | 9 | 9 | 6 | 6 | 5 | |
| - | 8 | 8 | 5 | 5 | ||||
| 5 | 2 | 9 | 0 | 8 | 1 | 0 |
Write 8 in the ten millions place.
| Place value | ten millions | millions | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 8 | 16 | |||||||
| 8 | 5 | 2 | 9 | 9 | 6 | 6 | 5 | |
| - | 8 | 8 | 5 | 5 | ||||
| 8 | 5 | 2 | 9 | 0 | 8 | 1 | 0 |
The solution is: 85,290,810
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