Casio hr100tm won't print, shows E, won't feed paper. It calculates in On mode only.

SOURCE: CHANGE TAX %+ & TAX- ON MY CASIO JF-100TE CALCULATOR

1. Press [AC]
2. Hold [SET/%] key for about 2 seconds
3. Press [TAX+]
4. Input the tax rate
5. Press [SET/%]

SOURCE: can not load paper

Solved by itense perseverance!

SOURCE: loading paper tape

when you first get the calculator there is a black piece of plastic in the very back of the calculator printer with a sliver piece of metal under neath it. push the paper in between the black piece of plastic and the piece of metal and keep pushing feed. at first when i tried this it wouldn't work, but you have to push the paper hard without ruining the piece of paper
hopefully you understand this


and if you have any more questions just please ask

SOURCE: m mod n in Casio fx991MS

there is one button ab/c beneath CALC... if u want to calculate 7 mod 4 then... u should press 7 then ab/c 4 and equal to
1, 3 ,4 which is 4*1=4 and 7-4=3 remainder...

SOURCE: standard deviation

standard deviation

calculate mean of a data set:

1. Turn calc. on or press MODE SeTUP
2.Press 3 for STAT
3. Press 1 for VAR
4.Enter values for X column
5. WHen done entering press SHIFT 1
6.Press 5
7.Press 2 to calculate the mean
8.Press =