Operations With Scientific Notation

Write the answer in scientific notation.

4.1 x 10⁵ + 5.5 x 10⁶ =

• 5.91 x 10⁶

• 9.6 x 10⁵

• 9.6 x 10¹¹

• 4.65 x 10⁵

The mass of a substance is 8 X 10⁹ micrograms. If one microgram is equal to 1 X 10^-6 grams, what is its mass in grams?

• 1.25 X 10^-15 grams

• 1.25 X 10^-3 grams

• 8 X 10³ grams

• 8 X 10¹⁵ grams

A rectangular section of land made up of wheat farms has a length of 5 X 10⁴ meters and a width of 6 X 10³ meters What is the area of the land in square meters?

• 3 X 10⁶ m²

• 3 X 10⁷ m²

• 3 X 10⁸ m²

• 3 X 10¹² m²

Which is the largest number?

• 9.5 x 10³²

• 3.1 x 10^-4

• 8.4 x 10¹⁹

• 4.8 x 10^-6

Find the difference.

(3.8 x 10⁴) - (2 x 10³)

• 1.8 x 10⁴

• 1.8 x 10¹

• 3.6 x 10¹

• 3.6 x 10⁴

Multiply:
(9.4 x 10⁶)(3.2 x 10⁵)

• 30.08 x 10¹¹

• 3.8 x 10¹

• 3.008 x 10¹²

• 2.9375 x 10¹

Solve:
(9 x 10^-6) / (3 x 10^-3) 

• 27 x 10^-9

• 3 x 10^-3

• 3 x 10^-9

• 27 x 10^-3

(2.3 x 10²)+(4.1 x 10²)=

• 6.4 x 10⁴

• 6.4 x 10²

• 6.4 x 10⁰

• .64 x 10¹

(7.7 x 10²) + (1.1 x 10²)=

• 8.8 x 10⁴

• 6.6 x 10⁴

• 8.8 x 10²

• 6.6 x 10²

Cell A=4.2 x 10^-4 
Cell B=2.1 x 10^-5 
Cell C=8.4 x 10^-4

Cell C is ___ larger than cell A.

• 2x

• 20x

• .2x

• 4x