Scientific Notation

The approximate mass of the Milky Way Galaxy is 7 x10⁴¹ kilograms. Express this measurement as order of magnitude.

• 10⁴¹ kilograms

• 10⁷ kilograms

• 7 x 10⁴¹ kilograms

• 10^-41 kilograms

3, 800, 000 meters should be written in scientific notation as ____________

• 3.8 x 10⁶ meters

• 38 x 10⁵ meters

• 0.38 x 10⁷ meters

• 3.8 x 10^-6 meters

Write 0.0000190 seconds in scientific notation

• 1.90 x10^-5 seconds

• 0.190 x 10^-5 seconds

• 19.0 x 10^-6 seconds

• 190 x 10^-7 seconds

Express 1.90 m/s in scientific notation.

• 1.90 x 10¹ m/s

• 190 x 10^-1 m/s

• 1.90 x 10⁰ m/s

• 0.19 x 10¹ m/s

10⁰ = ?

• 1

• 0

• undefined

• 1/10

500 x 10³ kilograms should be properly written as _________

• 50 x 10⁴ kilograms

• 5 x 10⁵ kilograms

• 0.5 x 10⁶ kilograms

• 5 x 10³ kilograms

0.241 x 10^-6 millimeters should be properly written as

• 2.41 x 10^-7 millimeters

• 2.41 x 10^-5 millimeters

• 241 x 10^-9 millimeters

• 24.1 x 10^-8 millimeters

0.01 x 10^-11 milliliters should be properly written as

• 1 x 10^-13 mL

• 1 x 10^-9 mL

• 0.1 x 10^-12 mL

• 0.1 x 10^-10 mL

Fix 31 x 10^-10 seconds so that it is properly written in scientific notation

• 3.1 x 10^-9 seconds

• 3.1 x 10^-11 seconds

• 0.31 x 10^-12 seconds

• 0.31 x 10^-8 seconds

The mantissa or coefficient should be written _______

• such that there is a single and non -zero digit to the left of its decimal point.

• such that there are at least two non -zero digits to the left of its decimal point.

• such that there are at least two significant digits to the left of its decimal point.

• such that the are at least three non - zero digits to the left of its decimal point.