Casio Calculator MS300M User Manual

Form 7.20  
How to Run Casio MS-300M  
The Casio MS-300m works just like any calculator, but it calculates time! It is  
used to calculate Time Taken for Green Cards. It’s easy - just enter it the way  
you would say it!  
1. Enter the  
END time from  
the Green Card as  
HH (H/M/S)  
MM (H/M/S)  
SS (H/M/S)  
Ex: Enter  
12 (H/M/S)  
02 (H/M/S)  
33 (H/M/S) for  
12:02:33 then  
Press the MINUS  
key  
Press the  
H/M/S  
key  
between  
each  
time  
0 – 00’00”  
entry as  
if it were  
the :  
(colon)  
key. See  
the  
Example.  
2. Next enterthe  
START Ex: Enter  
11 (H/M/S)  
15 (H/M/S)  
00 (H/M/S) for  
11:15:00  
3. Press the EQUAL  
key and the Time  
Taken will appear  
Ex: 0:47:33 (47  
minutes and 33  
seconds) would  
appear for the  
example given.  
If Start time is a “12:xx:xx” and the End time is a “1:xx:xx”, you will have to use “military  
time” i.e. make the 1 a 13. There will only be 7 or 8 entries that are like that – the ones  
that start from around 12:30 on until 1:00. Entries that start at 1:00 or after are OK again!  
Wet calculatorsdon’t work. Keep yourcalculator DRY!  
 

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