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Question about Texas Instruments TI-30X-IISTK Scientific Calculator

Standard Percentages on TI-30X IIS

How do I get the TI-30X IIS to give standard Percentages? For example, 100+ 10% is 110. But when I entered this into the calculator it gives the answer as 100.1. So, how do I get it to give the correct answer? The calculator is in ''Grad'' mode, not sure if this is part of the problem, Thanks so much!

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• Anonymous Aug 19, 2011

Thank you very much!!!

• Anonymous Mar 31, 2014

110 would be the perfect test score, I missed 10 problems, what would be the percentage of correct answers

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You must enter 100+10%100 or 100+10%(100). This will give you the correct answer of 110.

Posted on Aug 19, 2011

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• jackpbass Sep 08, 2015

Thanks! That cleared up that mystery. Obviosuly this isn't the calc to take to the store for simple discount calcs.

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Try 100 x ("times") .1 for 34% x .34, etc

Posted on Nov 25, 2009

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Related Questions:

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You will find the description of all potential errors in the manual.

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How do I convert from decimals to fraction with my TI-30X IIS calculator? I need the step by step process

The following examples will demonstrate how to convert decimals into fractions using the TI-30Xa and TI-30Xa Solar. Please be aware that TI-30Xa Solar School Edition calculators do not have this functionality.

Example: Convert .25 to 1/4
- Input .25, press [2nd][<--] (says F<>D above it).

** F<>D means fraction to decimal, decimal to fraction.

Example: Convert 1.38 to 1_19/50

- Input 1.38, press [2nd][<--].

Example: Convert 9.75 to 9_3/4

- Input 9.75, press [2nd]{<--].

Press 2nd [STAT] then select CLRDATA to clear statistics data. Select 1-VAR or 2-VAR for one-variable or two-variable statistics. Press DATA and enter your data (x for 1-VAR or x and y for 2-VAR). Press 2nd [EXIT-STAT] and select N. Press STAT-VAR to see a menu of statistics variables and their values. Sx (and Sy) will give you the standard deviation, sigma-x (and sigma-y) will give you the population standard deviation.

Standard Deviation

Press 2ND [CSR] to clear the stat data.

For each data point, enter the number followed by SIGMA+

If you have grouped data, enter the number followed by 2ND [FRQ] followed by the frequency then SIGMA+

Press 2ND [sigma x n] for the population standard deviation or 2ND [sigma x n-1] for the sample standard deviation.

I just bought a texas instruments TI-30X IIS Calculator. How do I reduced improper fractions with no mixed numbers. What keys do I press. For example: 3 6/8 X 7 1/3 = ? How do I find the answer?

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Mem cleared

Press any key (except for 2nd and On), and the message should disappear.

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