Converting Between Regular and Scientific Notation

Mr. Faraba introduces scientific notation, explaining its necessity for handling very large or small numbers. He details the structure of scientific notation, emphasizing the importance of the coefficient and exponent. The video covers converting numbers to and from scientific notation, highlighting common mistakes and providing practice problems. Significant figures are briefly mentioned, with a promise of a separate video for further explanation. The tutorial aims to enhance understanding of scientific notation through examples and practice.

Why is scientific notation used?

• To increase the complexity of calculations

• To replace all forms of numerical notation

• To simplify writing very large or small numbers

• To make numbers easier to read in any context

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CCSS.8.EE.A.3

What is the range of the coefficient in proper scientific notation?

• Exactly 10

• Greater than 10

• Less than 1

• Greater than or equal to 1 and less than 10

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CCSS.8.EE.A.3

What determines the sign of the exponent in scientific notation?

• The length of the number

• Whether the original number is greater than or less than 10

• The size of the coefficient

• The number of significant figures

Tags

CCSS.8.EE.A.3

What does an exponent of zero in scientific notation signify?

• The number is 10

• The number is 1

• The number is 0

• The number is less than 1

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CCSS.8.EE.A.3

How do you convert a large number into scientific notation?

• Move the decimal to the right and use a positive exponent

• Move the decimal to the left

• None of the above

• Use a negative exponent

What is the correct scientific notation for a number less than 1?

• Positive exponent

• Negative exponent

• No exponent

• Exponent of zero

Tags

CCSS.8.EE.A.3

What is a common mistake when writing numbers in scientific notation?

• Making the coefficient too large or too small

• Forgetting to write the exponent

• Choosing the wrong sign for the exponent

• Using a coefficient between 1 and 10

Tags

CCSS.8.EE.A.3

How is 125,000 incorrectly written in scientific notation?

• 1.25 x 10^5

• 125 x 10^3

• 0.125 x 10^6

• 12.5 x 10^4

Tags

CCSS.8.EE.A.3

When converting back to regular notation, what indicates a large number?

• Moving the decimal to the right

• A coefficient less than 1

• A negative exponent

• Moving the decimal to the left

Tags

CCSS.8.EE.A.3

Why are significant figures important in scientific notation?

• They determine the exponent

• They indicate the precision of a measurement

• They change the value of the coefficient

• They are not important

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CCSS.8.EE.A.4