SIGNIFICANT PROBLEMS

 

1.  For each of the following numbers, indicate the number of significant figures:

 

number

number of significant figures

rule #

a)

541.2

 

1

b)

23,459

 

1

c)

2,034

 

2

d)

1.0009

 

2

e)

65.0

 

3

f)

202.0

 

2,3

g)

0.045

 

4

h)

0.0080

 

3,4

i)

4,320

 

5

 

2.  Do the following calculations and record the answers with the correct number of significant figures:

            a)  3.29 g/6.15 cm3                              b) 2.04 kg + 6.13 kg + 18.92 kg =

            c)  5.23 cm x 38 cm                             d)  18.25 g - 3.9 g

            e)  1.283 m x 4.5 m