The arithmetic calculations and operations are included here more as
calculator practice than practice on adding, subtracting, multiplying and
When fractions are involved in a problem, like the volume of a box that is 4
11/16 by 4 11/16 by 2 1/8 inch, fractions are immediately converted to decimals
and the problem produces a decimal answer which works great. So if you have a
fear of fractions, fear not. Just learn how to convert a fraction or mixed
number to a decimal number and you will not need to be perplexed.
Be sure to clear up any misunderstanding you have about the square and
square root of a number. And be sure you can perform calculations with a ruler.
You should be able to add and subtract feet and inches with accuracy. This will
be an important aspect of your work as an electrician.