Module 2 Pretest Homework Packet

Module Two-Part B: Rounding Off & Arithmetic Operations of Sign. Figures     5 points

 

Round off the following numbers to three significant figures:

 

(1) 1.598 x 106 =   _____________          

 

 

(2) 0.000 000 484 500 = _________________

 

 

(3)  0.01045  =  _______________

 

 

(4)  1.98754 X10-7 =  ________________

 

Perform the following addition/subtraction/multiplication/division operations and express the answer using the proper units and significant figures:

 

(5)    4        mL                                                                                                                                               

      16.3     mL                                                                                                                                            

 +     0.953 mL

 

 

 

(6)   376.5  mL

     -   76     mL

 

 

(7)    16.5 cm

     X   1.7 cm

 

 

 

(8)       12.0  g ÷ 1.00 g =

                   or

           12.0  g / 1.00 g =

 

 

(9)  9.2 cm  X  9.20 cm  X  3.14 X  22.65cm  =

 

 

(10)  (5398 cm3 – 2060.2 cm3) /16.8 cm3/sphere  =

 

Additional Homework (not required) for your practice:

Corwin 7th edition:

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