Adding and Subtracting Scientific Notation

Add withing scientific notation 
(5.2 x 10⁷) + (3.01 x 10⁴)

• 5.20301 x 10¹¹

• 520301 x 10⁷

• 5.20301 x 10⁷

• 5.20301 x 10⁸

(2.3 x 10²)+(4.1 x 10²)=

• 6.4 x 10⁴

• 6.4 x 10²

• 6.4 x 10⁰

• .64 x 10¹

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

Sophia has 3.8 x 10⁴ dollars in her savings account and Abigail has 2 x 10³ dollars in her savings account. Find the difference between their savings.

• 1.8 x 10⁴

• 1.8 x 10¹

• 3.6 x 10¹

• 3.6 x 10⁴

Add within scientific notation 
(6.2 x 10²) + (9.7 x 10⁰)

• .6297 x 10²

• 6.297 x 10⁰

• 6.297 x 10³

• 6.297 x 10²

The population of Cherokee County is 5.6 x 10³. The population of Cedar Bluff is 1.3 x 10². How many more people are there in Cherokee County than Cedar Bluff?

• 57.4 x 10³

• 5047

• 5,470

• 5.47

Find the combined mass of Earth and Venus. Earth is approximately 5.9 x 10²⁴ kg and Venus is approximately 4.9 x 10²² kg.

• Add

• Subtract

• Multiply

• Divide

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

3.2 x 10² + 2.2 x 10²

• 5.7 x 10²

• 54 x 10²

• 5.7 x 10⁴

• 5.4 x 10²

In 2012, NYC’s population was about 8.1 × 10⁶ and Los Angeles' population was about 3.8 × 10⁶. What is the population of these two cities combined?

*THE FIRST FACTOR HAS TO BE BETWEEN 1 - 9.9

• 1.19 x 10^-7

• 1.19 x 10⁷

• 11.9 x 10⁶

• 1.19 x 10⁶