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Casio JF-100TE Calculator Questions & Answers
Casio JF-100TE Battery Replacement
Taking the back off The Casio JF-100 calculator is similar to the ...TE. Remove the two screws at the top back. Place a small screwdriver blade along the seam where the back plate fits into the front plate. There are 3 fasteners on each long side and 1 fastener on each of the front and back sides. Find the spot where it's the easiest to separate the back plate from the top plate (there are only two). Carefully twist the blade to cause an opening. Then proceed sequentially around the perimeter releasing each fastener. The front plate will easily separate from the back plate at this time. There are no parts that will fall-out--don't worry. Replace the battery. Press the front and back plates together to snap the fasteners.
Tax Rate
step 1 pess the AC button
step 2 press and hold for two seconds the % button
step 3 press the tax+ button
step 4 input 6
step 5 press the % button
that should be the tax set
you can check it is set correctly by pressing the AC button and then the tax+ and 6 should be displayed
How do i do prime numbers on the NEWYES NY-991MS calculator and CTIFREE fx-991ES PLUS calculator?
The NEWYES NY-991MS and CTIFREE fx-991ES PLUS calculators do not have a dedicated "FACT" button like the Casio FX-83GTX. However, you can still find prime numbers on these calculators.To find prime numbers:NEWYES NY-991MS:Press the "MODE" button.Choose "PRIME" from the list of options.Enter the desired number and press "=" to check if it's prime.CTIFREE fx-991ES PLUS:Press the "MODE" button.Select "TABLE" or "TABLESET."Input a starting point and an ending point, then observe the table for prime numbers.Although the techniques may vary from those used on the Casio FX-83GTX, they prove to be effective for prime number calculations on the designated calculators.
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