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Using parentheses – Calculated Industries 4090 User Manual

Page 23

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22 — ITI S

HEET

M

ETAL

/HVAC P

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USING PARENTHESES

Your calculator has Parentheses keys

( and ) for performing

mathematical operations. (In the Order of Operations method,
expressions inside of parentheses are performed first.)

The calculator offers four levels of parenthesis:

1) First parenthesis level opened – press

( for one Right-

Sided Parenthesis.

2) Second level opened – press

( a second time for two

Right-Sided Parentheses

( (.

3) Third level opened – press

( a third time for three Right-

Sided Parentheses

( ( (.

4) Fourth level opened – press

( a fourth time for four Right-

Sided Parentheses

( ( ( (.

As you close each level of Parenthesis, the displayed number of
Parentheses in the upper left corner of the LCD is reduced by one,
and the results of expression are displayed.