As a petroleum manager, you can very easily be expected to be assigned to a brigade, division, corps, or

higher staff. As the only expert on petroleum matters, you may be tasked to prepare staff papers or

contribute to war plans involving fuel logistics, a working knowledge of petroleum mathematics is

fundamentally important for the development of logistics operations involving the distribution of fuel to

theater forces. Accordingly, it is essential that you develop a proficiency in basic mathematics.

Whole numbers are numbers that are not fractions i.e. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10. They can be positive

and negative. These are called Arabic numbers because they originated in the Middle East. Signs of

mathematical operations tell you what to do with groups of numbers:

+ means to add

- means to subtract

x and ( ) mean to multiply

/ and ,, mean to divide

The first step in the process is to arrange the numbers uniformly in vertical columns. The last digit to the

right in each number should be in the vertical column. Add the numbers in the right hand column. If the sum

contains more than one digit (10 or more), write the right hand digit under the column added, and add the

remaining digit or digits to the left. For example, if the sum of the column is 43, write the 3 under the column

and add the 4 to the sum of the digits in the next column.

Example: Add 8145, 234, 756

Arrange the numbers in vertical order first. Add and carry over digits.

8145

234

+ 756

Total/Sum 9135

Example: Subtract 83 from 597

597

- 83

Difference 514

specified number of times. Used to shorten the process of addition.

Example: 232 X 2 = 464

232

+ 232

464

Example: 552 / 23 = 24

Measurements are seldom taken and given in whole numbers. Fractions become necessary if we are going

to maintain any type of accuracy. Usually, the more accurate our measurements, the more fractions we will

have to deal with.

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QM 5092