Unformatted text preview: 1300 nails  counted or weighed? • Use scientific notation to remove doubt 2.40 x 10 3 has ? significant figures Exact numbers have an infinite number of significant figures. – 12 inches IS 1 foot – 100 cm IS 1 meter – 60 minutes IS 1 hour – Multiplication & Division rule Easier of the two rules Product has the smallest number of significant figures of multipliers • Addition & Subtraction rule More subtle than the multiplication rule Answer contains smallest decimal place of the addends....
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 Fall '07
 Atwood
 Chemistry, Decimal, Elementary arithmetic

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