How to round? Take a few examples to see if 3561 is about 3600 or 4000 Give a few more examples and concepts
It depends on your accuracy
For example, 3561 is rounded to thousands, ≈ 4000
For example, 3561 is rounded to hundreds, ≈ 3600
For example, 3561 is rounded to ten places, ≈ 3560
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