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Unformatted text preview: (1.21+0.05)*10^2 = 1.26*10^2 ** *Multiplication and division:* Simply multiply or divide the mantissas, and add or subtract the exponents. 121*50 = (1.21*10^2 ) * (5*10^1 ) = (1.21*5) * 10^2+1 = 6.05*10^3 250/50 = (2.5*10^2 ) / (5*10^1 ) = (2.5/5) * 10^21 = 0.5*10^1 = 5 300,000,000*31,000,000 = (3*10^8 ) * (3.1*10^7 ) = (3*3.1) * 10^8+7 = 9.3*10^15 Sheet1 Page 2 ** *Powers and square roots:* To raise a power of 10 to a power, multiply the two powers. (10^2 )^4 = 10^2*4 = 10^8 If you have a mantissa and a power of 10, raise both the mantissa and the power of 10. (2*10^2 )^4 = (2)^4 * (10^2 )^4 = 16 * 10^8 = 1.6 * 10^9 Taking the square root is equivalent to raising a number to the power 1/2. (900) = (9*10^2 ) ^1/2 = (9)^1/2 * (10^2 )^1/2 = 3 * 10 = 30...
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 Spring '08
 Coyne
 Scientific Notation, Decimal, Exponentiation, Nth root

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