Measurements, Calculations and Conversions Answers

1                II.   How many significant figures?

a)    0.003250 _______4_________

b)   2001.5 _________5__________

c)    001.0 ____________2_______

d)   6.022 X 10²³ ______4_______

e)    2 ________Infinite__________

f)     2.0 _________2____________

III. Perform the following calculation and round to the correct number of 
significant digits:

a) (22.23 + 14.2) / (17.6 - 8.311)

b) (9.4 X 10²² + 18.44 X 10²¹) x 44.4 x 10^-18

IV. Decimal to scientific notation and scientific to decimal notation

 a)    2,853,450,000 = 2.85345×10⁹

             b) 0.000000052 = 5.2×10⁻⁸

             c) 2,853,450,001 = 2.85345001×10⁹

             d) 3.557 X 10² = 355.7

             e) 2.438 X 10^-5 = 0.00002438

  V. Which of the following is correct

                  a) 1kg = 1000 g
                  b) 1kg = 1x10³ g
                  c) Both a and b are correct 

VI.  

VII. The area of a golf course is measured to be 3.5 square miles. Calculate the area of
the golf course in square meters using the following conversion factors:
(1 mi = 5280 ft; 1 ft = 12 in; 1 in = 2.54 cm; 1 m = 100 cm).

  VIII. Convert the following

  a)    47.8 L = 47800 mL

  b)   16 L = 16000 mL

  c)    32780 mL = 32.78 L

  d)   5000 mL = 5 L

IX. Calculate BMI for

  a) 70 kg; 1.80 m = 21.6
  b) 75 kg; 6.2 ft = 21
  c) 180 lb; 160 cm = 31. 6
  d) 130 lb; 5.9 ft = 18.4
  e) 100 kg; 5.3 ft = 38. 6