Can i know how to take approx values correctly, many time we get an answer like 1.66 and write 1.67.... I usually dont like taking approx values because i fear it will be called wrong. I even fear what is the examiner seeing in the answer key , the approx value or the exact value. Please help me on this.

Dear student.

If the value is 1.66666, you can write it as 1.67.
If the value is 1.667, then write it as such.
If you have confusion, mention approximate value in brackets after a particular value.

Regards.

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