Solution - Long subtraction
0.63
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths |
| 2 | . | 0 | 9 | |
| - | 1 | . | 4 | 6 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
9-6=3
| Place value | ones | . | tenths | hundredths |
| 2 | . | 0 | 9 | |
| - | 1 | . | 4 | 6 |
| . | 3 |
Because the upper digit (0) in the tenths column is too small to get a positive difference, borrow 1 from the digit (2) in the next number place which becomes (1) and get (10).
| Place value | ones | . | tenths | hundredths |
| 1 | 10 | |||
| 2 | . | 0 | 9 | |
| - | 1 | . | 4 | 6 |
| . | 3 |
Subtract the numbers in the tenths column from the top number:
10-4=6
| Place value | ones | . | tenths | hundredths |
| 1 | 10 | |||
| 2 | . | 0 | 9 | |
| - | 1 | . | 4 | 6 |
| . | 6 | 3 |
Subtract the numbers in the ones column from the top number:
1-1=0
| Place value | ones | . | tenths | hundredths |
| 1 | 10 | |||
| 2 | . | 0 | 9 | |
| - | 1 | . | 4 | 6 |
| 0 | . | 6 | 3 |
The solution is: 0.63
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