Solution - Long subtraction
9.4
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths |
| 1 | 0 | . | 3 | |
| - | 0 | . | 9 | |
| . |
2. Subtract the numbers using long subtraction method
Because the upper digit (3) in the tenths column is too small to get a positive difference, borrow 1 from the number to the left (10) which becomes (09) and get (13).
| Place value | tens | ones | . | tenths |
| 0 | 13 | |||
| 1 | 0 | . | 3 | |
| - | 0 | . | 9 | |
| . |
Subtract the numbers in the tenths column from the top number:
13-9=4
| Place value | tens | ones | . | tenths |
| 0 | 13 | |||
| 1 | 0 | . | 3 | |
| - | 0 | . | 9 | |
| . | 4 |
Subtract the numbers in the ones column from the top number:
9-0=9
| Place value | tens | ones | . | tenths |
| 0 | 13 | |||
| 1 | 0 | . | 3 | |
| - | 0 | . | 9 | |
| 9 | . | 4 |
Write 0 in the tens place.
| Place value | tens | ones | . | tenths |
| 0 | 13 | |||
| 1 | 0 | . | 3 | |
| - | 0 | . | 9 | |
| 0 | 9 | . | 4 |
The solution is: 9.4
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