Multiplying and Dividing

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# Multiplying and Dividing - PowerPoint PPT Presentation

Multiplying and Dividing. By: Jenny Erickson. Multiplying in Scientific Notation. Multiplying…. The general format for multiplying is as follows… (N x 10 x )(M x 10 y ) = (N)(M) x 10 x+y First multiply the N and M numbers together and express an answer.

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## PowerPoint Slideshow about 'Multiplying and Dividing' - duke

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### Multiplying and Dividing

By: Jenny Erickson

Multiplying…
• The general format for multiplying is as follows…
• (N x 10x)(M x 10y) = (N)(M) x 10x+y
• First multiply the N and M numbers together and express an answer.
• Secondly multiply the exponential parts together by adding the exponents together.
Multiplying…
• Finally multiply the two results for the final answer.
• (2.41 x 104)(3.09 x 102)
• 2.41 x 3.09 = 7.45
• 4 + 2 = 6
• 7.45 x 106
• Use the link below to practice multiplying numbers in scientific notation.
• Multiplying in Scientific Notation
Dividing…
• The general format for dividing is as follows…
• (N x 10x)/(M x 10y) = (N/M) x 10x-y
• First divide the N number by the M number and express as an answer.
• Secondly divide the exponential parts by subtracting the exponent from the exponent in the upper number.
Dividing…
• Finally multiply the two results together to get the final answer.
• (4.89 x 107)/(2.74 x 104)
• 4.89 / 2.74 = 1.78
• 7 – 4 = 3
• 1.78 x 103