Solution - Long subtraction
40.99
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 5 | . | 8 | 2 | |
| - | 4 | . | 8 | 3 | |
| . |
2. Subtract the numbers using long subtraction method
Because the upper digit (2) in the hundredths 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 (12).
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 12 | ||||
| 4 | 5 | . | 8 | 2 | |
| - | 4 | . | 8 | 3 | |
| . |
Subtract the numbers in the hundredths column from the top number:
12-3=9
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 12 | ||||
| 4 | 5 | . | 8 | 2 | |
| - | 4 | . | 8 | 3 | |
| . | 9 |
Because the upper digit (7) in the tenths 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 (17).
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 17 | ||||
| 7 | 12 | ||||
| 4 | 5 | . | 8 | 2 | |
| - | 4 | . | 8 | 3 | |
| . | 9 |
Subtract the numbers in the tenths column from the top number:
17-8=9
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 17 | ||||
| 7 | 12 | ||||
| 4 | 5 | . | 8 | 2 | |
| - | 4 | . | 8 | 3 | |
| . | 9 | 9 |
Subtract the numbers in the ones column from the top number:
4-4=0
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 17 | ||||
| 7 | 12 | ||||
| 4 | 5 | . | 8 | 2 | |
| - | 4 | . | 8 | 3 | |
| 0 | . | 9 | 9 |
Write 4 in the tens place.
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 17 | ||||
| 7 | 12 | ||||
| 4 | 5 | . | 8 | 2 | |
| - | 4 | . | 8 | 3 | |
| 4 | 0 | . | 9 | 9 |
The solution is: 40.99
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