FOUR BASIC ARITHMETIC OPERATIONS
Review of Introductory Mathematics
FOUR BASIC ARITHMETIC OPERATIONS
This chapter reviews the basic mathematical operations of addition,
subtraction, multiplication, and division of whole numbers.
EO 1.2
APPLY one of the arithmetic operations of
addition, subtraction, multiplication, and division
using whole numbers.
Calculator Usage, Special Keys
This chapter requires the use of the +, , x, , and = keys. When using a TI30 calculator, the
÷
number and operation keys are entered as they are written. For example, the addition of 3 plus
4 is entered as follows:
3 key, + key, 4 key, = key, the answer, 7, is displayed
Parentheses
The parentheses keys allow a complicated equation to be entered as written. This
saves the time and effort of rewriting the equation so that multiplication/division
is performed first and addition/subtraction is performed second, allowing the
problem to be worked from left to right in one pass.
The Decimal Numbering System
The decimal numbering system uses ten symbols called digits, each digit representing a number.
These symbols are 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. The symbols are known as the numbers zero,
one, two, three, etc. By using combinations of 10 symbols, an infinite amount of numbers can
be created. For example, we can group 5 and 7 together for the number 57 or 2 and 3 together
for the number 23. The place values of the digits are multiples of ten and given place titles as
follows:
MA01
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