Rules for Counting Significant Figures

2 sig figs. 2 sig. figs. 4 sig. figs. Example 2: 0.000400 x 35.000 = 0.0140. 3 sig figs 5 sig figs 3 sig figs. For addition or subtraction. the result has the same number of decimal places as the least precise measurement used in the calculation. ................
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