Solution - Long subtraction
70.7
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths |
| 7 | 7 | . | 7 | |
| - | 7 | |||
| . |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths |
| 7 | 7 | . | 7 | |
| - | 7 | . | 0 | |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the tenths column from the top number:
7-0=7
| Place value | tens | ones | . | tenths |
| 7 | 7 | . | 7 | |
| - | 7 | . | 0 | |
| . | 7 |
Subtract the numbers in the ones column from the top number:
7-7=0
| Place value | tens | ones | . | tenths |
| 7 | 7 | . | 7 | |
| - | 7 | . | 0 | |
| 0 | . | 7 |
Write 7 in the tens place.
| Place value | tens | ones | . | tenths |
| 7 | 7 | . | 7 | |
| - | 7 | . | 0 | |
| 7 | 0 | . | 7 |
The solution is: 70.7
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