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Working with significant figures
Identifying significant-figures
  1. Non-zero digits are always significant.
  2. Zeros between non-zero digits are always significant.
  3. Leading zeros are never significant.
  4. Trailing zeros are only significant if the number contains a decimal point.

Identify significant figures
Number of significant figures: Significant figures are:

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Round to the nearest one significant figure

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Round to the nearest two significant figures

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Round to the nearest three significant figures

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Round significant figures
Round to: 1 s.f. 2 s.f. 3 s.f. 4 s.f.

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