Many units are combinations of dimensions and their respective units. There are other derived units of measure that you will regularly encounter, and knowing the basic units that comprise them will greatly help the solving of problems. Knowing the proper units and dimensions can also help you recall the ordering of some basic formulas by simply making sure the units cancel properly . A sample problem is included at the end of this handout, solved with three different, but equivalent, systems of notation, just so you are familiar with each. With all that in mind, I would just like to conclude with a word of advice.
Most students have little problem understanding the basic concepts presented in some general form.
Most commonly, however, the problem is the lack of an active understanding of the material. An active understanding involves using the material in new situations not identical to the example or homework problems. This is the classic sign of a passive understanding of the material. Homework problems are the key to overcoming this problem, and the more problems you work, the more easily you will be able to adapt the material to new situations. To this end, if you are experiencing difficulty, it will be useful to work more problems than just those assigned As an aid the answers to all odd numbered problems are in the back of your text.