Standard (Index) Form

What is 3700 in standard form?

• $3.7\times10^3$

• $3.7\times10^2$

• $37\times10^2$

• $37\times10^3$

Write $1.2\times10^5$  as an ordinary number

(a)  

Write 0.003 in standard form

(answer without spaces and use ^ to indicate the power)

(a)  

Write 43 900 000 in standard form

(answer without spaces and use ^ to indicate the power)

(a)  

Write $2.38\times10^{-3}$  as an ordinary number

(a)  

 $2.03\times10^3$ is the same as 20300

• True

• False

Standard form is written in the form: $a\times10^b$  

Which statements are true?

•  $1<a\le10$  

• b can only be positive

•  $1\le a<10$  

• b can be positive and negative

What is 10 000 in standard form?

•  $100\times10^2$ 

•  $10\times10^3$ 

•  $1.0\times10^4$ 

•  $0.1\times10^{-4}$ 

Calculate $\left(6\times10^5\right)\times\left(2.5\times10^{-2}\right)$  

give you answer as an ordinary number

(a)  

Calculate $\left(8\times10^{-5}\right)\div\left(5\times10^{-7}\right)$  

give you answer as an ordinary number

(a)