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2-8 Multiplying a Power of Ten by a Whole Number 4 10 = ___________________ 4 100 = ___________________ 4 1,000 = ___________________ 4 10,000 = __________________ 4 100,000 = _________________ 4 1,000,000 = ________________ Write a sentence to explain the pattern you notice.

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Try some. 1.) 100 6 =4.) 55 1,000 = 2.) 9 10,000 =5.) 48 10,000 = 3.) 27 100,000 =6.) 100 349 =

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Multiplying a decimal by a power of ten 4.2 10 = ___________________ 4.2 100 = ___________________ 4.2 1,000 = ___________________ 4.2 10,000 = __________________ 4.2 100,000 = _________________ 4.2 1,000,000 = _______________ _ Write a sentence to explain the pattern you notice. Write the steps to follow when multiplying by a power of ten. 1.) ________________________________________ 2.)________________________________________

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Let’s try some! 1.) 1,000 2.9 = 2.)10,000 7.84 = 3.)100 8.69 = 4.) 1,000 4.2=

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101 = _____________________________ 102 = _____________________________ 103 = _____________________________ 104 = _____________________________ 105 = _____________________________ 106 = _____________________________ Write a sentence to describe the pattern you noticed. Exponent Review:

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Scientific Notation - A number is written in scientific notation, when it is written as a product (multiplication) of a number between 1 and 10 and a power of ten. 2-8 Scientific Notation 2.6 103 Number between 1 and 10 Power of ten

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Write each number in standard form. 1.) 4 103 ________2.) 7 104 ___________ 3.) 4.6 102 _______4.) 8.21 107 ________ 5.) 1.72 101 ______6.) 9.01 105 ________ 7.) 3.67 105 ______8.) 8.2 106 _________

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Write each number in scientific notation. 9.) 23,000_____________________________ 10.) 4,000 _____________________________ 11.) 1,800 _____________________________ 12.) 45,000,000 _________________________ 13.) 7,980,000 __________________________ 14.) 9,056,000 __________________________

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