decimal places

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In rounding or truncation of a number to n decimal places, the original is replaced by a number with just n digits after the decimal point. When the rounding or truncation takes place to the left of the decimal point, a phrase such as ‘to the nearest 10’ or ‘to the nearest 1000’ has to be used. To say that a=1.9 to 1 decimal place means that the exact value of a becomes 1.9 after rounding to 1 decimal place, and so 1.85≤a≤1.95.

Subjects: Mathematics.

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