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 TI-30 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.