Correct Scientific Notation

Which of the following is true about 3.2 X 10^-6? Select all that apply.

• The standard form of the number is a large number that is more than one.

• The standard form of the number is a tiny number that is less than one.

• The exponent is negative because the number in standard form is a small number.

• The exponent is negative because the number in standard form is a large number.

0.0003 x 10^-3

• 3 x 10^-7

• 3 x 10¹

• .3 x 10^-6

• It is fine the way it is written

145 x 10⁶

• 14.5 x 10⁷

• 1.45 x 10⁸

• 1.45 x 10⁵

• It is fine the way it is written

13.008 x 10^-2

• 1.3008 x 10^-1

• 1.3 x 10^-3

• 1.308 x 10^-1

• It is fine the way it is written

0.00987 x 10⁴

• 9.87 x 10³

• 9.87 x 10⁷

• 9.87 x 10¹

• It is fine the way it is written

How do you know if a number in scientific notation is written in correct form?

• if it has  "x 10 ^{to a power"} in it

• See if the number of zeroes matches the exponent

• Look for the decimal point

• If there is exactly one digit to the left of the decimal point

Write 78 x 10⁵ in CORRECT scientific notation 

• 7.8 x 10⁴

• 7.8 x 10⁶

• It is already in correct form

Which of the following is correct scientific notation?

• 20.35 x 10⁴

• .2035 x 10⁴

• 2035 ⁴

• 2.035 x10⁴

Which one of these is in scientific notation?

• 8.987000

• 8.98 x 10⁶

• 80.987 x 10

• 8.98⁶

Express the following in scientific notation:
.000045

• 4.5 x 10^-5

• 45 x 10^-6

• 4.5 x10⁵

• 45 x 10⁶