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Published byOwen Newman Modified over 8 years ago

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Week

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Student will: scientific notation Write in scientific notation

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Take only the digits and zeroes between numbers (ignore the beginning and ending zeroes) 53504.400 53504.4 Move the decimal so only one number is on the left of the decimal point 5.35044 Determine the number of times the decimal point moves to reach its original spot +4 times Add in x 10 5.35044 x 10 4 Step 1 Step 2 Step 3 Step 4

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0.0055 5.5 x 10 -3 12,800,000 1.28 x 10 7 0.0000206 2.06 x 10 -5 Practice

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Student will: Re-arrange equations

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For each equation, solve for a Practice

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Student will: Significant Digits Count the Significant Digits

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Rules for Counting Significant Figures Always Always count as significant figures. 1457 4 sig fig Never Leading zeros - Never count 0.0025 2 sig fig Always Captive zeros - Always count 1.008 4 sig fig only if Trailing zeros - count only if the number is written with a decimal point 100 1 sig fig 100. 3 sig fig 120.0 4 sig fig Nonzero Integers Zeros

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Unlimited significant figures Not obtained by measurement Determined by counting 15 apples Determined by definition 1 in. = 2.54 cm Exact Numbers

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Significant Figures

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The number of significant figures in the result is the same as in the measurement with the smallest number of decimal places. Adding and Subtracting Rules

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The number of significant figures in the result is the same as in the measurement with the smallest number of significant figures. Multiplying and Dividing Rules

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When performing multiple step calculations, an overbar should be used to keep track of the significant figures from step to step. Rounding should only be performed when reporting the final answer! Multistep

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