Question about Texas Instruments TI 30XIIS Scientific Calculator

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I don't know if maybe my calculator has a function turned on that rounds the answer to a whole number? But here is an example: 106 x 6.32 = 670 according to my calculator, which is wrong. The real answer is 669.92. My division does the same thing as well: 106/6.32 = 17 according to my calculator. Real answer is 16.7721519. Is there a key I need to press in order to fix this or is my calculator just busted?

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Your calculator is set to display no digits after the decimal point. To change this, you have two options: press 2nd [SCI/ENG] then select "FLO" for floating decimal or press 2nd [FIX] then select the desired number of digits after the decimal point (or F for floating).

Posted on Feb 14, 2014

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How to calculate mode with caso fx-991ES


MOD simply calculates the remainder that is left over after dividing by the MOD parameter.
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For larger numbers, eg 389487MOD31 you start by dividing 389487 by 31, which gives 12564.09677 (on the display), however you only want the fractional part so subtract 12564 to give 0.0967741935 . This includes the lower value digits that were previously hidden. Then multiply this result by 31 which gives 2.999999999 on the display. Since the result of a MOD calculation has to be a whole number, the answer needs to be rounded to 3. If the answer doesn't easily round to a whole number, it is likely that you have gone beyond the calculators working capacity.
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