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Answer:The method of rounding to a significant figure is often used as it can be applied to any kind of number, regardless of how big or small it is. ... look at the first non-zero digit if rounding to one significant figure. look at the digit after the first non-zero digit if rounding to two significant figures.

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Explanation:

Sig Fig Rules:

Any non-zero digit is significant.

Any zeros between 2 non-zero digits are significant.

Any trailing zeros after the decimal are significant.

Zeros before the decimal but after the decimal point are NOT significant and are placeholders.

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