Lessons Add Subtract Scientific Notation

On Tom's calculator, a number that can't be displayed in 10 or fewer digits is presented in scientific notation. Tom enters a multiplication problem and the answer displayed on his calculator is 7 x 10¹¹. What is the number in standard notation?

• 700,000,000

• 70,000,000,000

• 700,000,000,000

• 7,000,000,000,000

Tags

CCSS.8.EE.A.3

The fairy fly is one of the world's smallest insects. It may measure no more than 1.39 x ^-4 meters in length. What is the total length of 2 of these insects, placed end to end?

• 2.78 x 10^-8

• 2.78 x 10^-4

• 1.39 x 10^-8

• 1.39 x 10^-2

Tags

CCSS.8.EE.A.4

The approximate volumes of water in Lake Michigan and Lake Erie are 1.7 x 10¹⁴ ft³ and 1.7 x 10¹³ ft3. Which statements are true? Choose all that are correct.

• Doubling the volume of water in Lake Michigan would yield 3.4 x 10¹⁴ ft³.

• A body of water with 1,000 times more water than Lake Erie would have a water volume of 1.7 x 10¹⁶ ft³.

• Doubling the volume of water in Lake Michigan would yield 3.4 x 10²⁶ ft³.

• Lake Michigan has 10.0 times more water than Lake Erie.

• Lake Michigan has 1.7 times more water than Lake Erie.

Tags

CCSS.8.EE.A.3

A country in Europe has a population of 4.5 x 10⁶ people. A neighboring country has a population of 2.6 x 10⁷ people. What is the total population of the two countries?

• 3.05 x 10⁷

• 7.1 x 10⁷

• 7.1 x 10¹³

• 3.05 x 10¹⁴

Tags

CCSS.8.EE.A.4

Erin is studying the area and population of diffferent states. What is the difference in total area of Alaska and Connecticut? Express your answer in scientific notation.

• 1.4 x 10⁴

• 17.01 x 10⁴

• 1.701 x 10⁶

• 1.4 x 10⁷

Tags

CCSS.8.EE.A.4

Find the sum (5.5 x 10⁵) + (2.5 x 10⁵).

• 8 x 10¹⁰
• 8 x 10⁵
• 8 x 10⁰
• 8 x 106 

Tags

CCSS.8.EE.A.4

(7.9 X 10²) - (2.3 X 10²)= 

• 4.32 X 10²
• 5.6 X 10²
• 1.02 X 10³
• 5.72 X 10²

Tags

CCSS.8.EE.A.4

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

Tags

CCSS.8.EE.A.4

Subtract the within the scientific notation. 
(2 x 10³) - (1.9 x 10²)

• 1.81 x 10⁵
• 1.81 x 10³
• 1.81 x 10⁶
• 1.81 x 10⁴

Tags

CCSS.8.EE.A.4

Which of the following is correct scientific notation?

• 20.35 x 10⁴
• .2035 x 10⁴
• 2035 ⁴
• 2.035 x10⁴

Tags

CCSS.8.EE.A.3