Under the Rural Cleanliness Mission, college students cleaned 1 km 750m of a village road that is 2 km 575m long.
Under the Rural Cleanliness Mission, college students cleaned 1 km 750m of a village road that is 2 km 575m long. How much remained to be cleaned?
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| km | m |
| 1 | 1575 |
| 2 – 1 | 575 – 750 |
| 0 | 825 |
750 m cannot be subtracted from 575 m.
So, convert 1 km = 1000 m.
∴ 825 m remained to be cleaned
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