Hints for Solving Quantitative Problems Laura L. Sanders, Ph.D.

Solving numerical problems is a critical aspect of scientific work. Your calculations must be neat and carefully done, and must be accompanied by explanations of the computations. Here's how to do well on solving numerical problems:

*
Start with lots of clean scratch paper.

* Write down information given; write what you need to
find.

* Solve the problem in a logical sequence of steps that
take you from what you know to what you want to know.

* Convert units as necessary. For more on units,
see p. 19-20 in Fetter's *Applied Hydrogeology *textbook.

* At each step, write in words what process that step
involves.

* Check to be sure your answer is reasonable, that you
included units of measurement, and that the answer is in a convenient
unit
and order of magnitude.

* Check the number of significant figures (digits)
in the answer. For more on significant figures, see p. 18-19 in
the
textbook.

* Then, copy your work onto a clean sheet of paper.

* Leave lots of blank space.

* Write no unexplained numbers or words on the
paper.

* Put a box around the final answer.

* Start each problem on a new sheet of paper.

* On every graph, label each axis, including units of
measurement; give title and date; and write chapter and problem number.

* Some answers are best given in tables. If your answer
includes a table, make it neat. Each column needs a heading; the
heading must include units of measurement. If applicable, show a
sample calculation after the table.

* Write your name on every page.

* Staple or clip pages together.

* Trim ragged edges.

* Write the ** units of measurement** at
every step in the solution.

Department of Earth Science | Northeastern Illinois University

*©
2007 Laura L. Sanders *