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Scientific Notation Scientific Notation is a short-hand way of writing down really big number, or really small numbers. The mass of the earth is: Saying this number is not an easy task. Writing these zero’s is not very convenient (or fun) To help us we use Scientific Notation

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Scientific Notation Numbers expressed in scientific MUST be expressed as a product of: a number greater or equal to one, but less than ten And A power of ten

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**Are these Numbers in Scientific Notation?**

33.1 x 104 11 x 102 5.3 x 108 9.9 x 1011 0.3 x 102 5 x 107 x 105

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**What is 561 000 000 000 in Scientific Notation?**

1. Place a decimal point after the first non-zero digit(giving you a number greater or equal to 1 but less than 10) Drop the trailing zeros 5.61 Count the number of places(boinks) the decimal was moved. Express this number as an exponent of 10 5.61 x 1011

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**What is 420 000 000 in Scientific Notation?**

1. Place a decimal point after the first non-zero digit(giving you a number greater or equal to 1 but less than 10) Drop the trailing zeros 4.2 Count the number of places (boinks) the decimal was moved. Express this number as an exponent of 10 4.2 x 108

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**What is 580 000 in Scientific Notation?**

1. Place a decimal point after the first non-zero digit(giving you a number greater or equal to 1 but less than 10) Drop the trailing zeros 5.8 Count the number of places (boinks) the decimal was moved. Express this number as an exponent of 10 5.8 x 105

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**What is the Value of Each Exponent?**

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Do Now 10.15.13 Today’s Objective Students will be able to express a very large number or very small number in both scientific notation and standard.

Do Now 10.15.13 Today’s Objective Students will be able to express a very large number or very small number in both scientific notation and standard.

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