Rules For Significant Figures

(3 sig figs) (4 sig figs) = (3 sig. figs) (smallest) Adding and subtracting: Add or subtract the numbers. The final answer can contain only as many decimal places as found in the measurement with the . fewest number. of decimal places. Example: 134.052 m + 1.23 m = 135.282 ( rounds to 135.28 ... ................
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