REVIEW OF DIMENSIONAL ANALYSIS
1. Read the problem carefully. What is the problem asking for? Be sure the entire
problem has been read and understood. This may require you to read the problem
two or three times. YOU CANNOT ANSWER THE PROBLEM IF YOU DO NOT
KNOW WHAT IT IS ASKING!!!!
2 Determine exactly what results are to be produced by the calculations.
3. Determine what principles and relationships are involved.
4. Think about possible methods to use in solving the problem.
5 Use the sample problems to help you set up and solve the problem.
6. Based on definition, determine the appropriate factors that allow you to solve for the
7. Once you have selected the appropriate factors for that specific problem type, write
them down on your paper.
8. Units are treated the same as numbers in any mathematical calculations.
9. Write the intermediate stages of the calculations clearly. Avoid writing one number
on top of another as a method of correction. Make each digit legible. This will
allow you to go back and check your work later.
10. Mentally estimate an answer before working the problem.
11. Do the mathematics involved and check your work. Do not round off any
intermediate calculations. Be extremely careful in positioning the decimal point and
make certain the final answer has the appropriate number of significant figures.
12. Cancel units. The units you have left should be an appropriate unit for what the
problem asked. Example: If the problem asked for "How many grams," your final
answer should be in grams. If it is not, go back and check your work. Often, all
that is required is a simple metric conversion.
13. Compare the calculated result with your estimated answer. If the two figures
disagree drastically, determine which result is wrong.
14. Finally, go back and read the problem again. Did you answer the question correctly
and does your answer make sense?