1-9 Understanding Scientific Notation

Question 1: What is scientific notation and why is it used?

• is a way to write very large and very small numbers. Its more efficient and convenient

• is a way to notate in science class. Its short and fast.

• is a way of writing medium sized numbers in science. It is expensive and slow to use

• Is a way of writing large and small fractions. It is more convenient and efficient.

• Yes. 2.8 is between 1 and 10, and move the decimal 6 places to the left.

• Yes. 2.8 is between 1 and 10, and move the decimal 6 places to the right.

• No. The exponent is incorrect. It is 6 places to the right, so the exponent should be positive 6.

• No. The number has 6 places to the left of 2.

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• Yes, because when you convert standard form to scientific notation, you move the decimal to the right to get 3.2.

• No, the standard form is a very small number (decimal). In scientific notation, decimal numbers are written with a negative exponent.

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• 0.0000000034

• 0.000000034

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Question 6: The largest virus know to man is the Megavirus, which measures 0.00000044 meter across. Express this number in scientific notation.

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• 76,000,000,000,000

• 0.0000000000076

• 0.0000000076

• 7,600,000,000,000

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• 0.00015

• 0.000000015

• 150,000,000

• 1,500,000,000

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Question 9: Brenna wants an easier way to write 0.0000000000000000587.

0.0000000000000000587 is written as ___ x 10 ^-- in scientific notation.

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• Yes, because the number is being multiplied by a power of 10.

• No, because to be in scientific notation the number must be between 1 and 10.

• Yes, because it is written as a product of a number and a power of 10.

• No, because it has a negative exponent.

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