Solution - Long subtraction
6.56
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths |
| 9 | . | 8 | ||
| - | 3 | . | 2 | 4 |
| . |
Put zeros in the blank number places:
| Place value | ones | . | tenths | hundredths |
| 9 | . | 8 | 0 | |
| - | 3 | . | 2 | 4 |
| . |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) 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 (10).
| Place value | ones | . | tenths | hundredths |
| 7 | 10 | |||
| 9 | . | 8 | 0 | |
| - | 3 | . | 2 | 4 |
| . |
Subtract the numbers in the hundredths column from the top number:
10-0-4=6
| Place value | ones | . | tenths | hundredths |
| 7 | 10 | |||
| 9 | . | 8 | 0 | |
| - | 3 | . | 2 | 4 |
| . | 6 |
Subtract the numbers in the tenths column from the top number:
7-2=5
| Place value | ones | . | tenths | hundredths |
| 7 | 10 | |||
| 9 | . | 8 | 0 | |
| - | 3 | . | 2 | 4 |
| . | 5 | 6 |
Subtract the numbers in the ones column from the top number:
9-3=6
| Place value | ones | . | tenths | hundredths |
| 7 | 10 | |||
| 9 | . | 8 | 0 | |
| - | 3 | . | 2 | 4 |
| 6 | . | 5 | 6 |
The solution is: 6.56
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