Scientific Notation with Positive and Negative Powers

Convert this number into scientific notation: 0.068

• 6.9 x 10⁶

• 6.8 x 10^-9

• 6.8 x 10^-2

• None of the above

Change from standard form to scientific notation: 12,000,000

• 12.0  x  10⁷

• 0.12  x  10⁷

• 1.2  x  10⁶

• 1.2  x  10⁷

Change from standard form to scientific notation:  0.000398

• 39.8  x  10^-5

• 3.98  x  10^-5

• 3.98  x  10^-4

• 39.8  x  10^-6

Try to change the number back to standard form:  6.79  x  10⁴

• 679,000

• 6,790

• 67,900

• 6,790,000

Try to change the number back to standard form: 3.97  x  10^-2

• 397

• 0.0397

• 0.00397

• 0.397

Which of the following in the LARGEST number?

• 9 x 10⁶

• 8 x 10¹⁰

• 1.3 x 10¹²

• 5.3 x 10³

Which of the following numbers is the SMALLEST?

• 8.7 x 10³

• 3 x 10⁴

• 1.3 x 10⁸

• 9 x 10²

Change from standard form to scientific notation:  450,000

• 45  x  10^-5

• 45  x  10⁵

• 4.5  x  10^-4

• 4.5  x  10⁵

Light travels at a rate of 186,000 miles per second.  Write this number in scientific notation.

• 86 x 10⁵

• 86 x 10⁴

• 18.6 x 10⁴

• 186 x 10³

Which of the following is written in proper scientific notation?