Question about Texas Instruments BA-II Plus Calculator

# I am trying to calculate a problem using scientific notation but it is not giving me the correct answer and my calculator is set to 9 dec places the equation is 1.9x10^10- x 453.6 / 163871 I keep getting .000000005 which is wrong I'm not getting numbers after the five so for me to change it into scientific notation the ans suppose to be 5.3x10^9

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Hello,
Your notation expression contains an extra symbol ( either the - or the second x).
If I enter
(1.9x10^10)x453.6/163871 I get 5.262148845 x 10^7 about 5.3 x10^7
If I enter
(1.9x10^10 - 453.6)/163871 I get 1.159 x 10^5.
Your result is off by a factor of 100 to 10000.
As to the scientific display mode, you set it by pressing [MODE][->][SCI][ENTER] [2nd][QUIT]. You can leave the Float option to 9 digits if you want.

Hope it helps.

Posted on Oct 14, 2009

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Posted on Jan 02, 2017

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## Related Questions:

### My calculator will give me an answer in scientific notation. How do I change it to decimal form?

To switch out of scientific notation, press SHIFT MODE then select Fix or Norm.

Be aware that the calculator will switch to scientific notation anyway if the magnitude of the answer is too large or too small.

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### My casio FX 991ES is giving formula answers, to a calculation using a large exponent number in a formula answer, I need it to tell me a long number instead. Sum is 6.7 x 1018. The answer I get is 6.7x1018,...

Your answer is 6.7*10^18. That requires 19 places on the display: There are not enough places to write that. Besides, calculators are deigned to use Scientific Notation whenever the result to be displayed is too large or too small.
If you enjoy writing zeros, convert by hand the scientific notation into what you call long number.

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Clear the calculator.
Press [SHIFT][9] (CLR) or [SHIFT][MODE] (Setup) 8:Norm and choose Norm1 or Norm 2. Select the number of digits.

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### When I try to calculate say 0.2 ^ 12 I get a result of 4.09600E-9 clearly not correct, this happens for all power of calculations any helpo would be very appreciated!

0.2^12 = 0.000000004096

In order to get this number to fit onto the screen the calculator switches to scientific notation, showing the number as 4.096 times ten to the minus 9.

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### Casio fx-115ms OR ANY scientific calculator

Engineering notation ALWAYS puts the exponent as a multiple of three (kilo, mega, giga, etc). If you want the exponent as it is, use scientific notation. You can put the fx-115EX into scientific notation by pressing SHIFT MODE 7 and then entering the number of digits you want after the radix mark. Unfortunately there is no way to have the calculator adjust both the mantissa and exponent by anything other than three.

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### My calculator keeps giving a particular error. I know that it shouldn't give this error. So eg, I do 0.95/99.05 = 9.59111.5598x10-3. It should be 0.0095. Can you please tell me how to correct this? I...

The error is in the eyes of the beholder. In scientific notation your value of 0.0095 is written as 9.5*10^(-3). Actually the calculator showed you more digits than you were asking for and its answer is more precise that yours. When you choose the Input/Output of the calculator to be LineIO, it will show the results as decimals. Howvever if the number to be displayed is too small or too large, the calculator will use the scientific notation.

To do exact calculations (whenever possible) set the Input/Output mode to MathIO. The result will be a fraction (19/1981). After that you can press the [S-D] button to convert that exact result to its decimal representation.
If you do not mind my advice, I suggest you learn how to interpret scientific notation, and familiarize yourself with the capabilities of this new type of calculators.

To configure the calculator for MathIO, press [SHIFT][MODE] to open the (SetUp), then select [1:MathIO]. In this mode, you will be able to see the expressions you type in as they would appear in a textbook:Fractions will appear as fractions, you will see radicals, etc. You can do a string of calculations in MathIO and convert only the last result to its decimal representation.

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### When i type 1-.9909 it will give me scientific notation. then i tried changing the fix mode when it says 0~9 i changed it to 0 but that isnt giving me the correct answer. how do i fix this

"FIX" mode is the number of decimal places, When you say Fix-0 it will truncate the decimals.
Either set model FIX-4 or FIX-5 or better still, just regular COMP mode.
Shift-clr-2 (mode) should set it back to defaults.

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### How do i use scientific notation

Hello,
Press [SHIFT][MODE][7:Sci]. Select the number of digits in the number.
In the exemples below, the Zeros are place holders.
0: 10 digits 0.000000000x10^0
1: 1 digit 0[x]10^0
2: 2 digits 0.0x10^0
...
9: 9 digits 0.00000000x10^0
Hope it helps

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### I have an HP 12C calculator and I cannot find the user manual and I cannot remember how to change the no. of decimal places?

Check this HP FAQ:
Setting a Fixed Decimal Place You can download the manual and user guides for your calculator from here:
http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us&product=81575&lang=en&

http://h10025.www1.hp.com/ewfrf/wc/product?lc=en&dlc=en&cc=us&lang=en&product=81575&

Introduction This document describes how to set the desired number of decimal places on the HP 12c calculator in standard format. It also covers how to enter a number in scientific notation. Instructions for standard format
1. Press and release .
2. Press the number key for the desired number of decimal places to be displayed to the right of the decimal point (0 through 9). The calculator displays a maximum of 10 digits.
The display will show the specified number of decimal places. The answer will be rounded to the number of digits selected. Example (standard format) If the number in the display is 14.87456320, the display will be changed as follows: Keystroke Display 14.8746 14.9 15 14.87456320 Instructions for scientific notation Use scientific notation for very large or very small numbers. Type in the mantissa. After pressing, the next numbers keyed in are exponents of 10. Press . If during an operation a result has more than 10 digits, the calculator automatically displays the number in scientific notation

Introduction This document describes how to set the desired number of decimal places on the HP 12c calculator in standard format. It also covers how to enter a number in scientific notation. Instructions for standard format
1. Press and release .
2. Press the number key for the desired number of decimal places to be displayed to the right of the decimal point (0 through 9). The calculator displays a maximum of 10 digits.
The display will show the specified number of decimal places. The answer will be rounded to the number of digits selected. Example (standard format) If the number in the display is 14.87456320, the display will be changed as follows: Keystroke Display 14.8746 14.9 15 14.87456320 Instructions for scientific notation Use scientific notation for very large or very small numbers. Type in the mantissa. After pressing, the next numbers keyed in are exponents of 10. Press . If during an operation a result has more than 10 digits, the calculator automatically displays the number in scientific notation

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### I Cant get the Correct Answers!

If you're sure the answer isn't really 1.007, check to see if the calculator is in fixed mode. You can change it to scientific notation(that'll give you lots of digits past the decimal place, or I prefer engineering, which is scientific except all powers of ten are in multiples of three).

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