Significant figures 3

How many significant figures does the following number have: 102

• 3

• 2

• 1

How many significant figures does the following number have: 0.0203

• 5

• 4

• 3

• 2

Round 0.0233 to two significant figures

• 0.023

• 0.024

• 0.022

• 0.02

Round 15.67 to 3 significant figures

• 15.6

• 15.7

• 15

• 16

Round 157 to 2 significant figures

• 15

• 16

• $1.6\times10^2$
  

• $1.5\times10^2$

Round 12510 to 2 significant figures

• 12

• 13

• $1.3\times10^4$

• $1.2\times10^4$

Calculate 11.0 cm + 7.62 cm and give your answer with the appropriate number of significant figures.

• 18.62

• 18.6

• 18

• 19

Calculate 71.02-56.661 and give your answer with the appropriate number of significant figures.

• 14

• 14.359

• 14.36

• 14.4

Calculate 

 $300.0g\div154\ cm^3$  
and give your answer with the appropriate number of significant figures. 

•  $1.948\ \frac{g}{cm^3}$  

•  $1.94\ \frac{g}{cm^3}$  

•  $1.95\ \frac{g}{cm^3}$  

•  $1.9\ \frac{g}{cm^3}$  

Calculate $3,55\ m\div7,0\ s$  and give your answer with the appropriate number of significant figures

•  $0.5071\ \frac{m}{s}$  

•  $0.507\ \frac{m}{s}$  

•  $0.51\ \frac{m}{s}$  

•  $0.5\ \frac{m}{s}$