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Scientific Notation and Metric Units Scientific Notation and Metric Units • SN is used for numbers that are very large or very small • SN has a standard form: a nonzero number with one place to the left of a decimal point following by 10 raised to some power Scientific Notation and Metric Units Which of these numbers is NOT expressed in standard scientific notation? a. 3.0 X 104 b. 56.2 X 10-8 c. 0.45 X 10-7 d. 1.9 X 109 Scientific Notation and Metric Units Using your calculator for scientific notation. Put these numbers into your calculator and press “enter”. a. 0.00000000056 ________________ b. 1,000,000,000,000 ________________ Note that your calculator has an EE button that is used for SN. Your calculator automatically expresses an answer in standard form. NEVER WRITE “E” IN AN ANSWER! Scientific Notation and Metric Units Do questions 5 and 6 on page 164. Scientific Notation and Metric Units #5, p 164 a. 9.367421 X 106 b. 7.241 X 103 c. 5.519 X 10-4 d. 5.408 X 100 e. already in standard scientific notation f. 6.319 X 10-1 g. 7.215 X 10-9 h. 7.21 X 10-1 Scientific Notation and Metric Units #6, p 164 a. 483 b. 0.0007221 c. 6.1 d. 0.0000000911 e. 4,221,000 f. 0.00122 g. 9999 Scientific Notation and Metric Units You need to memorize the information on page 130, Table 5.2. Do questions 9 and 10 on page 164. Be sure to get help now with your calculator if you are having problems. Scientific Notation and Metric Units #9, page 164 a. 103 b. 10-2 c. 10-3 d. 10-1 e. 10-9 f. 10-6 Scientific Notation and Metric Units #10, page 164 a. mega b. milli c. nano d. mega e. centi f. micro Scientific Notation and Metric Units On page 169, do #1, 2, 3, 4