Std Fm & d.p.2

STANDARD FORM AND DECIMAL PLACES     20041116
This exercise tests your ability to switch between the forms of precision on your calculator by using the Mode or FSE keys (depending on your calculator type).  By now you should have confidence that you can do this, you have appropriate instructions to yourself taken from your calculator’s instruction manual and you have done the previous sheet. A particular fault is failing to recognise  x10 (written) and EXP (calculator) as equivalent. Do NOT use x10 or x10x    on your calculator!


Give each of these calculations to
                                    a) 4 significant figures in Standard Form   AND     (b) to 6 decimal places

     
  Example:    8.17x 10³                     =   2.226x10-2                          =   0.022262
                          3.67x105 

1.
  17.12 x 10³      
      22.77 x10 6

2.    36.49 x 1023      
       27.6 x10 25

3.     86 500  
       769 358

4.     9.715 x 0.164³    


5.    7.65 x 10 -1    x  5.602 x10 -5


6.    1.045 x 10 11    x  4.1x10 -13


7.   12.3 x 10 13    x   8.7x 10 -4          
           9.7 x 10 12

8.    3.9 x 10 26     x   2.73 x 10 -39


9.     2.85 x 10 19      
        9.69 x 10 22

10.   8.1x 10 9 x 13.2 x 10 -7      
           7.24 x 10 3

11.   0.021⁴   x  16²


12.    8.1 17   x  3.2 –14

Write on the sheet only if you can be neat enough to make it fit…….


1       7.52x10 -4      0.000 75                           7       1.10x10 -2       0.011 03       
2       1.32x10 
-2      0.013 22                          8        1.06x10 -12     0.000 00    
3       1.12x10
 -1      0.112 43                          9        2.94x10 -4       0.000 29       
4       2.61x10 
-1      0.261 29                        10        1.48.x10⁰      1.476 80       
5       4.29.x10
 -5     0.000 04                        11        4.98x10 -5       0.000 05 
6       4.28x10 
-2      0.042 85                        12        2.36.x10    235 583 909.425 58    

© David Scoins 2017