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Section 2: Scientific Notation and Dimensional Analysis

Scientific Notation and Dimensional Analysis

1.
Which of the following numbers is equal to 2.70 x 10-4?
A)0.00027
B)0.675
C)27 x 10-3
D)270
2.
How many milliliters are there in 1.0 microliter?
A)1.0 x 10-1 mL
B)1.0 x 10-2 mL
C)1.0 x 10-3 mL
D)1.0 x 10-4 mL
3.
What is the area in square millimeters of a rectangle that is 7.431 cm long and 23.33 mm wide?
A)1734 mm2
B)173.4 mm2
C)17.34 mm2
D)1.734 mm2
4.
Dimensional analysis is a method of problem-solving that focuses on ________.
A)units
B)error
C)accuracy
D)precision
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