# Ch 2 Homework.pdf - 9/7/2014 Ch 2 Homework Ch 2 Homework...

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9/7/2014Ch 2 Homework1/22Ch 2 HomeworkDue: 11:59pm on Friday, September 5, 2014You will receive no credit for items you complete after the assignment is due.Grading PolicyItem 1Learning Goal:To understand and be able to use scientific notation.Scientists often make measurements that are very large or very small. Scientific notation is a way to write numbers that describe very large or very small things.There are two parts to the number in scientific notation: the decimal part and the exponential part.Part AType the number 1340000 in scientific notation.Express your answer using scientific notation.Hint 1.Determine the decimal partWhen the number 1340000 is written in scientific notation, what is its decimal part?Express the decimal part numerically.Hint 1.How to approach the problemAlthough it's not shown, a decimal point exists at the very end of this number (i.e., 1340000.). Move that decimal point to the right or left untilyou have a number between 1 and 10.ANSWER:Hint 2.Determine the exponentWhen the number 1340000 is written in scientific notation, what is its exponential part?Express your answer as an integer.Hint 1.How to approach the problemTo find the decimal part, you had to move the decimal point. How many places did you move it?If you moved the decimal point to the left, then the exponent will be positive. If you moved the decimal point to the right, then the exponentwill be negative.ANSWER:ANSWER:decimal part = 1.34exponent =61340000 =1.34×106
9/7/2014Ch 2 HomeworkCorrectSo.Part BType the number 0.000354 in scientific notation.Express your answer using scientific notation.Hint 1.Determine the decimal partWhen the number 0.000354 is written in scientific notation, what is its decimal part?Express the decimal part numerically.Hint 1.How to approach the problemMove the decimal point to the right or left until you have a number between 1 and 10.
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Hint 2.Determine the exponentWhen the number 0.000354 is written in scientific notation, what is its exponential part?Express your answer as an integer.Hint 1.How to approach the problemTo find the decimal part, you had to move the decimal point. How many places did you move it?If you moved the decimal point to the left, then the exponent will be positive. If you moved the decimal point to the right, then the exponentwill be negative..

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