Wednesday, July 1, 2020

Scientific Notation and Significant Figures Worksheet 3

Scientific Notation/Significant Figures
Worksheet 3

1. Give the number of significant figures in each of the  following. 



 a)  10.0005 g   ______
 b)  0.003423 mm  ______
 c)  2900 + 100 ft  ______
 d)  8.9 x 105 L  ______
 e)  the number of minutes (60) that make up an hour         ______


2. Determine the answer for each of the following.  Be sure to  use the correct number of significant figures.
 

a)   27.34                                                         b)    2.8023
        6.90                                                             -  4.762
  +  13.124
 

c)  0.32 x 14.50 x 120 =                                   d)  24.1 / 0.005  =


3. Round each of the following to 3 significant figures.
 707.5  ____________                                 2,300.2  ______________
 

 0.0003350   _____________                      10.26730   _______________
 

 18.95 x 1021   ______________


4. Convert each of the following into correct scientific  notation.
 1747    _________________________________
 0.00000984     ___________________________
 3200.0 x 102  ____________________________
 0.002014 x 102  __________________________
 25600000000000000  ______________________  (use 4 sig. fig. for the last one only)


5. Calculate the following using the correct number of significant figures.
 a)  2.34 x 1047                   b)  9132.0
   + 9.2 x 1046                           -    1.6 x 103



6. Calculate the following using the correct number of significant figures.
 a)  (1.54 x 1058)(3.5 x 1060)
 b)  (7.9 x 1034) / (8.32 x 1023)


Answers - Worksheet 3

1. Give the number of significant figures in each of the  following. 
 a)  10.0005 g     6
 b)  0.003423 mm    4
 c)  2900 + 100 ft     2
 d)  8.9 x 105 L     2
 e)  the number of minutes (60) that make up an hour        infinite
2. Determine the answer for each of the following.  Be sure to  use the correct number of significant figures.

a)  47.36                                       b)    -1.960
c)  5.6 x 102                                  d)   5 x 103
3. Round each of the following to 3 significant figures.
 708                                2.30 x 103

 0.000335                      10.3

 19.0 x 1021
4. Convert each of the following into correct scientific  notation.
 1.747  x 103
 9.84  x 10-6
 3.2000 x 105
 2.014 x 10-1
 2.560 x 1016
5. Calculate the following using the correct number of significant figures.
 a)  3.26 x 1047                   b)  7.5 x 103
6. Calculate the following using the correct number of significant figures.
 a)  5.4 x 10118
 b)  9.5 x 1010