Operations with Scientific Notation Word Problem

Multiply.

Write the answer in scientific notation.

(2 x 10⁹)(4 x 10⁴)

• 8 x 10⁵

• 6 x 10¹³

• 8 x 10¹³

• 8 x 10³⁶

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

A box contains 5 X 10³ paper clips. The mass of each paper clip is 8 X 10^-4 kilograms. What is the combined mass of the paper clips in the box?

• 4 kilograms

• 40 kilograms

• 4 X 10⁷ kilograms

• 4 X 10^-7 kilograms

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

Solve:
(6 x 10⁶) / (2 x 10³)

• 12 x 10³

• 3 x 10⁹

• 1.2 x 10⁴

• 3 x 10³

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

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

(2.8 * 10⁸) (2.2*10³)

• 6.16 * 10²⁴

• 5.0 * 10¹¹

• 6.16 * 10¹¹

• 61.6 * 10¹¹