Solution - Long subtraction
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 0 | 8 | 4 | . | 0 | 7 | |
| - | 1 | 8 | 2 | 5 | . | 8 | 6 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
7-6=1
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 0 | 8 | 4 | . | 0 | 7 | |
| - | 1 | 8 | 2 | 5 | . | 8 | 6 |
| . | 1 |
Because the upper digit (0) in the tenths column is too small to get a positive difference, borrow 1 from the digit (4) in the next number place which becomes (3) and get (10).
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 10 | ||||||
| 3 | 0 | 8 | 4 | . | 0 | 7 | |
| - | 1 | 8 | 2 | 5 | . | 8 | 6 |
| . | 1 |
Subtract the numbers in the tenths column from the top number:
10-8=2
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 10 | ||||||
| 3 | 0 | 8 | 4 | . | 0 | 7 | |
| - | 1 | 8 | 2 | 5 | . | 8 | 6 |
| . | 2 | 1 |
Because the upper digit (3) 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 (13).
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 7 | 13 | ||||||
| 3 | 10 | ||||||
| 3 | 0 | 8 | 4 | . | 0 | 7 | |
| - | 1 | 8 | 2 | 5 | . | 8 | 6 |
| . | 2 | 1 |
Subtract the numbers in the ones column from the top number:
13-5=8
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 7 | 13 | ||||||
| 3 | 10 | ||||||
| 3 | 0 | 8 | 4 | . | 0 | 7 | |
| - | 1 | 8 | 2 | 5 | . | 8 | 6 |
| 8 | . | 2 | 1 |
Subtract the numbers in the tens column from the top number:
7-2=5
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 7 | 13 | ||||||
| 3 | 10 | ||||||
| 3 | 0 | 8 | 4 | . | 0 | 7 | |
| - | 1 | 8 | 2 | 5 | . | 8 | 6 |
| 5 | 8 | . | 2 | 1 |
Because the upper digit (0) in the hundreds column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (10).
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 10 | ||||||
| 7 | 13 | ||||||
| 3 | 10 | ||||||
| 3 | 0 | 8 | 4 | . | 0 | 7 | |
| - | 1 | 8 | 2 | 5 | . | 8 | 6 |
| 5 | 8 | . | 2 | 1 |
Subtract the numbers in the hundreds column from the top number:
10-8=2
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 10 | ||||||
| 7 | 13 | ||||||
| 3 | 10 | ||||||
| 3 | 0 | 8 | 4 | . | 0 | 7 | |
| - | 1 | 8 | 2 | 5 | . | 8 | 6 |
| 2 | 5 | 8 | . | 2 | 1 |
Subtract the numbers in the thousands column from the top number:
2-1=1
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 10 | ||||||
| 7 | 13 | ||||||
| 3 | 10 | ||||||
| 3 | 0 | 8 | 4 | . | 0 | 7 | |
| - | 1 | 8 | 2 | 5 | . | 8 | 6 |
| 1 | 2 | 5 | 8 | . | 2 | 1 |
The solution is: 1258.21
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