คำตอบ - Long subtraction
2.5
คำอธิบายทีละขั้นตอน
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths |
| 7 | . | 5 | |
| - | 5 | ||
| . |
Put zeros in the blank number places:
| Place value | ones | . | tenths |
| 7 | . | 5 | |
| - | 5 | . | 0 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the tenths column from the top number:
5-0=5
| Place value | ones | . | tenths |
| 7 | . | 5 | |
| - | 5 | . | 0 |
| . | 5 |
Subtract the numbers in the ones column from the top number:
7-5=2
| Place value | ones | . | tenths |
| 7 | . | 5 | |
| - | 5 | . | 0 |
| 2 | . | 5 |
The solution is: 2.5
ทำไมต้องเรียนสิ่งนี้
Learn more with Tiger
Why learn this