Question

what is approximation? write down the rules for rounding off answer ​

Answer 1

Answer:

Approximation is the process of using rounding to determine a fairly accurate value. Rounding off is the process of making a number less exact, but easier to work with, by adjusting it to a specific digit or multiple of ten: We round down for the digits 0, 1, 2, 3, 4, by keeping the next digit to the left the same.

Explanation:

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Answer 2

Answer:

Approximation : a value or quantity that is nearly but not exactly correct.

Rule : If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up.

Ex: 2.91 = 3 (approx.)