LEXIBOOK PLC490 Mode D'emploi page 6

Calculation made: 20 + 10 – 5 x 2 ÷ 5
Calculation to be amended: 20 -5 -5 x 3 ÷ 5
8. Using the results from two calculations: "ANS/CHECK"
Comparing the results from two calculations:
The "ANS/CHECK" key allows you to view the result from the one before last
calculation, and also that of the last calculation. Make two calculations ending with
"=", then press on "ANS/CHECK" in order to obtain the result from the one before last
calculation, and press once more on "ANS/CHECK" to get the last calculation.
The one before last calculation:
The last calculation:
Bring back the one before last result
Bring back the last result
Re-using the result from the last calculation:
Example
First calculation: 10 + 20 - 5
Second calculation: 100 -25
The calculator will show the message "ERROR" in the following cases.
- When dividing by zero
- In calculations where the result exceeds the capacity of the calculator.
In order to delete the error message and any other calculations, press "ON/C".
6
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Example
Example
Important notes
Press
▼
▼
CORRECT
- 5
▼
▼
3
CORRECT
▼
▼
Press
5 x 10 – 20 =
5 x 20 – 20 =
ANS/CHECK
ANS/CHECK
Press
10 + 20 - 5 =
100 - ANS/CHECK =
Copyright © Lexibook 2003
Display
20 REV
+ 10 REV
+ 10 CRT
- 5 CRT
- 5 CRT
x 2 CRT
x 3 CRT
x 3 REV
÷ 5 REV
= 6 REV
Display
30 GT
80 GT
30 CHECK
80 ANS
Display
25 GT
75 GT