Perform industry calculation

Perform four fundamental operations

The four basic mathematical operations--addition, subtraction,

multiplication, and division--have application even in the most

advanced mathematical theories. Thus, mastering them is one of the

keys to progressing in an understanding of math and, specifically, of

algebra. Electronic calculators have made these (and other)

operations simple to perform, but these devices can also create a

dependency that makes really understanding mathematics quite

difficult. Calculators can be a handy tool for checking answers, but if

you rely too heavily on one, you may deprive yourself of the kind of

rigorous mental exercises that will help you not just to do math, but

to fully understand what you are doing.

Perform conversion of units

How to Safely Convert Between Units

We can convert from km/h (kilometers per hour) to m/s (meters per

second) like this:

A kilometer has 1000 meters, and an hour has 3600 seconds, so a kilometer

per hour is:

1000

3600 = 0.2777... m/s

How did I know to make it 1000 and not 3600 (the other way around)? The

3600 1000 do the conversions

as fractions!

Example 1:

Let's start with a simple example: convert 3 km to m (3 kilometers to

meters). There are 1000 m in 1 km, so the conversion is easy, but let's

follow a system.

The system is:

Write the conversion as a fraction that equals 1

Multiply it out (leaving all units in the answer)

Cancel any units that are both top and bottom

Perform calculations on algebraic expressions

Perform calculations on algebraic expressions

 An algebraic expression is a mathematical phrase that contains numbers and/or variables.