Scientific Notation and Comparing Numbers

A phone app is downloaded 1,900,000,000 times. Write this number in scientific notation.

• 1.9 x 10^9

• 1.9 x 10^7

• 1.9 x 10^10

• 1.9 x 10^8

Tags

CCSS.8.EE.A.3

• 9.12e6

• 5.25e6

• 9.12e7

• 91.29e7

Tags

CCSS.8.EE.A.4

Place the following numbers in order from least to greatest:
7.8 x 10⁶,    5.1 x 10⁴,  
1.25 x 10⁵,    4.09 x 10⁴

• 4.09 x 10⁴,   
  1.25 x 10⁵,    
  5.1 x 10⁴,   
  7.8 x 10⁶,

• 4.09 x 10⁴,    
  5.1 x 10⁴,    
  1.25 x 10⁵,  
  7.8 x 10⁶, 

• 1.25 x 10⁵,  
  4.09 x 10⁴,    
  5.1 x 10⁴,     
  7.8 x 10⁶,  

Tags

CCSS.8.EE.A.3

Write the following in Scientific Notation

.000789

• 78.9

• 7.89 x 10^-4

• 7.89 x 10⁴

• 79

To compare two numbers that are in scientific notation, first compare the​ (a)   . If they are the same, then compare the​ (b)   .​

• exponents

• decimals

Tags

CCSS.8.EE.A.4

Convert the following number to scientific notation:
12,000,000

• 1.2 x 10⁷

• 1.2 x 10⁶

• 12 x 10⁷

Convert the following number to standard form:
8.15 x 10⁶

• 815,000

• 815,000,000

• 8,150,000

• 0.00000815

Tags

CCSS.8.EE.A.3

How would you write 0.0005 in scientific notation?

• 50 x 10⁵

• 5 x 10^-4

• 5 x 10³

• .5 x 10³

Express the following in scientific notation:
.000457

• 457 x 10⁶

• 457 x 10^-6

• 4.57 x10⁴

• 4.57 x 10^-4

Tags

CCSS.8.EE.A.3

Which of these numbers are NOT in scientific notation?

• 1.2 x 10³

• 5.3 x 10⁹

• 2.0 x 10⁰

• 10 x 10²

Tags

CCSS.8.EE.A.3