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Unit 2- Measurements, Math, and the Mole

Unit 2- Measurements, Math, and the Mole

Unit 2- Measurements, Math, and the Mole

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Adding <strong>and</strong> Subtracting with Sig<br />

Figs (fyi only…don’t need to know)<br />

Addition <strong>and</strong> Subtraction: The number<br />

of decimal places in <strong>the</strong> result equals <strong>the</strong><br />

number of decimal places in <strong>the</strong> least<br />

precise measurement.<br />

6.8 + 11.934 =<br />

18.734 18.7 (3 sig figs)

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