TMath 100 Summer 2012
Exam 1
Name: ___________________________________
Score: 100
Please show all appropriate work clearly and write all explanations in
complete sentences. You may use a scientific calculator only for all
problems. Graphing calculators are not allowed on this exam. You
may not use notes or scratch paper.
Remember: Partial credit can only be given if some work is shown!
 The answer to problems involving measurements must be to the
correct number of significant digits.
 Be sure to include the correct units when appropriate.
 All applications (word problems) must be answered in complete
sentences.
1. For each of the following, determine the accuracy and the
precision.
a) 1.0005 × 104 L
______________
b) 350.2 Kg
_____________
_______________
_______________
2. For each of the following, circle which measurement makes the
most sense.
a) The mass of a calculator
1.4 g
1.4 kg
140 g
140 mg
b) How much water could fit in the cap of a pen
12 L
12 mL
1.2 mL
1.2 L
3. Add the following and give your result in scientific notation. Show
all work clearly.
2.4  10 4  7.957  10 3
4. Convert 5.8 × 10−5 mm to kilometers. Show your work using
dimensional analysis with conversion factors.
5. A grain of rice has a mass of approximately 25 g. Convert this
amount to pounds. Show your work using dimensional analysis with
conversion factors. Write your answer in scientific notation if
necessary.
6. The doctor orders 125mg of Keflin. It is available as 1 gram per
10mL. How many mL should be injected? Show your work using the
dosage formula. Use dimensional analysis for any conversions you
make.
7. Solve for a .
M 
ab
a
8. You are on your way outside, and you look at the thermometer and
see the temperature is 23ᵒ C. Do you take a parka, a sweater, or just
walk out the door? Defend your answer.
9. The recommended dose for Ancobon is 12.5 to 37.5mg/kg/day
administered every 6 hours. It is available in 250mg capsules. A
patient weighs 99 pounds. What is the minimum number of mg that
the patient can receive each day? What is the minimum number of
capsules that the patient can take per dose?