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# Scientific Notation Pp

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### Transcript

• 1. How many sunflowers are in this field?
• 2. How much water do the people of Chicago use daily? 9,100,000,000 liters
• 3. What is the mass of the sun? Earth
• 4. The mass of the sun =
• 2 000 000 000 000 000 000 000 000 000 000 000g
• So how can we write this in a simpler way??
• 5. Scientific Notation:
• is used to make very LARGE or very SMALL numbers easier to handle .
• 6.
• RULE 1:
• SN only replaces zeroes! These zeroes represent decimal places!
• EXAMPLE:
• 45,000,000,000,000,000 = 4.5 X 10^16
• (The 16 tells you that there are 16 decimal places after the 4 to the end of the number!)
• 7.
• RULE 2:
• There is only one number in front of the decimal.
• Example:
• 4 .1349494 x 10 ^ -9
• Just remember that every number will be less than 10!
• 8.
• RULE 3:
• When moving the decimal RIGHT , the exponent will be NEGATIVE !
• EXAMPLE:
• 0.0000432= 4.32 x 10 ^ -5
• SMALL NUMBERS WILL ALWAYS HAVE A NEGATIVE EXPONENT!
• 9.
• Rule 4:
• When moving the decimal LEFT, the exponent will be POSITIVE !
• EXAMPLE:
• 55,000,000,000 = 5.5 X 10 ^10
• LARGE NUMBERS WILL ALWAYS HAVE A POSITIVE EXPONENT!