Solution - Long subtraction
4.69
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 1 | 7 | . | 4 | 6 | |
| - | 1 | 2 | . | 7 | 7 |
| . |
2. Subtract the numbers using long subtraction method
Because the upper digit (6) in the hundredths 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 (16).
| Place value | tens | ones | . | tenths | hundredths |
| 3 | 16 | ||||
| 1 | 7 | . | 4 | 6 | |
| - | 1 | 2 | . | 7 | 7 |
| . |
Subtract the numbers in the hundredths column from the top number:
16-7=9
| Place value | tens | ones | . | tenths | hundredths |
| 3 | 16 | ||||
| 1 | 7 | . | 4 | 6 | |
| - | 1 | 2 | . | 7 | 7 |
| . | 9 |
Because the upper digit (3) in the tenths column is too small to get a positive difference, borrow 1 from the digit (7) in the next number place which becomes (6) and get (13).
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 13 | ||||
| 3 | 16 | ||||
| 1 | 7 | . | 4 | 6 | |
| - | 1 | 2 | . | 7 | 7 |
| . | 9 |
Subtract the numbers in the tenths column from the top number:
13-7=6
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 13 | ||||
| 3 | 16 | ||||
| 1 | 7 | . | 4 | 6 | |
| - | 1 | 2 | . | 7 | 7 |
| . | 6 | 9 |
Subtract the numbers in the ones column from the top number:
6-2=4
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 13 | ||||
| 3 | 16 | ||||
| 1 | 7 | . | 4 | 6 | |
| - | 1 | 2 | . | 7 | 7 |
| 4 | . | 6 | 9 |
Subtract the numbers in the tens column from the top number:
1-1=0
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 13 | ||||
| 3 | 16 | ||||
| 1 | 7 | . | 4 | 6 | |
| - | 1 | 2 | . | 7 | 7 |
| 0 | 4 | . | 6 | 9 |
The solution is: 4.69
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