Scientific notation math

 What is the answer to this problem? $1.4\times10^{-5}\ +\ 5.6\times10^8$ 

•  $5.6\times10^8$  

•  $7.84\times10^3$  

•  $7.0\times10^3$  

•  $7.0\times10^{13}$  

 What is the answer to this problem? $1.4\times10^{-5}\ \cdot\ 5.6\times10^8$ 

•  $7.84\times10^{-3}$  

•  $7.84\times10^3$  

•  $7.84\times10^{-11}$  

•  $7.84\times10^{11}$  

 What is the answer to this problem? $6.6\times10^{11}\ \cdot\ 5.9\times10^{-24}$ 

•  $3.89\times10^{-12}$  

•  $3.89\times10^{12}$  

•  $1.25\times10^{-13}$  

•  $1.25\times10^{13}$  

 What is the answer to this problem? $\frac{3.2\times10^8}{4.4\times10^{-4}}\ =$ 

•  $7.72\times10^3$  

•  $7.72\times10^{-11}$  

•  $7.72\times10^{-3}$  

•  $7.27\times10^{11}$  

 What is the answer to this problem? $\frac{1.1\times10^5\cdot5.6\times10^{-8}}{2.2\times10^8}\ =$ 

•  $2.8\times10^5$  

•  $2.8\times10^{-5}$  

•  $2.8\times10^{-11}$  

•  $2.8\times10^{11}$  

What exactly is scientific notation?

• Scientific notation is a mathematical expression used to represent a decimal number between 1 and 10 so you can write large numbers using less digits.

• Scientific notation is an expression involving multiplication with a decimal between 1 and 10.

• Scientific notation is a thing used in math.

• Scientific notation is a way of presenting a number using less digits than the actual number.

Solve: (Scientific Notation)

(5.25x10⁷)+(8.6x10^-5)

• 5.20x10⁷

• 9x10⁶

• 4.76x10⁸

• 5.25x10⁷

Solve: (Scientific Notation)

(5x10^-18) (7.5x10^-3)

• 10x3.75^-19

• 3.75x10^-20

• 4x10^-18

• 5x10¹⁷

Solve: (Scienfiic Notation)

(7x10^-8)-(3.75x10⁵)

• 10x3.75⁵

• 4x10x-6

• -3.75x10⁵

• 3.75x10^-5

How are some ways you can use scientific notation in real life? (More than 1 answer)

• To present a bigger number using less digits.

• In a presentation to explain large statistics using less digits.

• To say the number with the most digits as possible.

• To present a really small number with less digits.