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Objectives: Scientific Notation What do I know about…scientific notation What do I think is …the reason why we use scientific notation What do I now know…What do I now think is… I.Unit 1 – What is Science? C.Experimental Data 2.Presenting Scientific Data

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602000000000000000000000 6.02 x 10 23 A shortcut used to report numbers that are really small or really large. Makes it easier to enter into calculators and calculate.

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$25.00 $25,000.00

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Which numbers are written in scientific notation?.0000572.45 x 10 45 2.45 x 10 -7 1250000000000

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6.02 x 10 23

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x 10 23 Coefficient Coefficient Exponent 6.02 Should always have the decimal after the first non-zero number Should never include trailing zeros or leading zeros The exponent is the number of decimal places the decimal moved.

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Which numbers are written in scientific notation?.0000572.45 x 10 45 2.45 x 10 -7 1250000000000

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Let’s try it on the white boards.

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6.02 x 10 23 6.02 EE 23

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(9.45 Multiply Coefficients Add the exponents x 10 34 )(2.58x 10 42 )

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(9.45 Divide Coefficients Subtract the exponents x 10 34 )/(2.58x 10 42 )

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Convert the following numbers into scientific notation (round to the 2 nd decimal place) 4569.64 0.0000387

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Daily Science (page 12) Convert the following using dimensional analysis: 1. 2.7 ft into cm (2.54 cm = 1 in.) 2. 17 m into km 3. 1.3 gallons to milliliters.

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