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A measurement expressed to three significant figures includes three digits that contribute to its precision, which may include leading zeros but excludes trailing zeros unless they are after a decimal point. For example, the number 0.00456 would be expressed as 4.56 × 10^-3 in three significant figures. Similarly, a measurement like 1500 could be expressed as 1.50 × 10^3 if it is intended to be three significant figures.

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1mo ago

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