Topic revision- Numbers of any magnitude

List the following in ascending order $8.2\times10^{-5},\ 8\times10^{-6},\ 8.04\times10^{-5}\ ,\ 7.9\times10^{-6}$  

•  $7.9\times10^{-6},\ 8\times10^{-6},\$  $8.04\times10^{-5},\ 8.2\times10^{-5}$  

•  $8\times10^{-6},\ 7.9\times10^{-6},\$  $8.04\times10^{-5}\ ,\ 8.2\times10^{-5}$  

•  $7.9\times10^{-6},\ 8\times10^{-6},\$   $8.04\times10^{-5}\ ,\ 8.2\times10^{-5}$  

•  $7.9\times10^{-6},\ 8.04\times10^{-5}$   $8.04\times10^{-5}\ ,\ 8.2\times10^{-5}$  

Calculate the following $6.2\times10^7\ \ \ \ \times\ \ \ 1.4\times10^{-2}$  and express your answer in scientifci notation

•  $8.68\ \times10^5$  

•  $86.8\ \times10^5$  

•  $86.8\ \times10^4$  

•  $868\ 000$  

Calculate the following $\frac{5.8\times10^6\ }{1.45\times10^{-3}}\$  and express your answer in scientifci notation

•  $4\ 000\ 000\ 000$  

•  $40\ \times10^9$  

•  $4\ \times10^9$  

•  $0.4\times10^{10}$  

How many significant figures: 153.0 mL

• 1
• 2
• 3
• 4

How many significant figures: 0.012 km

• 1
• 2
• 3
• 4

How many significant figures: 0.001 g

• 4
• 3
• 2
• 1

How many significant figures are there in 1008 grams?

• 1

• 2

• 3

• 4

If you are converting from cm to m, how many places and in what direction do you have to move the decimal?

• 3 right
• 3 left
• 2 right
• 2 left