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How to use sentry ca 656 calculator for exponential forms in positive and negative ? when i am trying to do 2 to the power of 3 , it is giving me answer as 2000.for this i pushed 2 button than EXP than 3 . can you please help me in using this calculator ? please reply as soon as possible. im HAVING MY EXAM TOMORROW

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The EXP key is what's marked EE on most calculators and adds a decimal exponent. 2 EXP 3 means 2*10^3 which is 2000 as you've discovered.

You need to use the x^y key (just above DEL) instead.

Posted on Sep 22, 2010


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Exponential form for 16

I am not sure what you mean. Even politicians use the term exponential so it has become blurry.
16=2^4 The power function is related to the exponential.
16=1.6*10^1 Scientific notation. Scientific notation is an exponential display format.
Take your pick.

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E^ won't work

You are not using it correctly. To calculate the exponential of a number you use the key sequence [SHIFT][LN] to access the exponential function. Then type it the exponent (positive or negative) and close the parenthesis.
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My TI84 plus silver edition calculator is giving me an incorrect sign whenever I do an exponential function. When I type in -25^2, it gives me -625 instead of 625. How do I fix this?

It's giving you the correct answer. It's calculating the negative of 25 squared. 25 squared is 625, and the negative of that is -625.

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I am using my Casio fx-300MS and have somehow gotten into the display where it puts my answers in exponential form; 5+5 = 1.0 exp10 to the 1. How do I return to getting my answers in standard form?

Display Format

To change the exponential display format, press the [MODE] key 3 times.

Fixed number of decimal places:

Press 1: Scientific Notation: 0

Press 2: SCI: 0

Press 3: NORM

You will then be prompted for NORM 1 or NORM 2. CHOOSE NORM 1

To return the calculation mode and setup to the initial defaults, press [SHIFT] [CLR] [2]

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Decimal point character Dot

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Step by step ho to Convert Fractions to decimals?

No post is an adequate substitute for reading the manual. Here is the meaning of some of the primary keys.
  1. hyp.: To calculate hyperbolic functions: hyp + sin calculates the hyperbolic sine, hyp + cos calculates the hyperbolic cosine, hyp + tan calculates the hyperbolic tangent (sinh, cosh, tanh)
  2. sin. To calculate the sine of an angle
  3. cos.To calculate the cosine of an angle
  4. tan. To calculate the tangent of an angle
  5. yx : y with raised x, calculates general powers
  6. ln: calculates the natural logarithm (log in base e)
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I am tutoring a student who uses the Casio fx-300MS. A problem required that he raise (-2) to the 4th power, and the calculator indicated the answer was -16. I know that the answer should be a positive 16,...

Enclose any negative number between parentheses before squaring.
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Frankly, I do not understand what you want.
I will try to guess.

Calculate the exponential of 135
Use the [2ndF][LN] key to access the exponential e^x
[2ndF][e^x] 135 [=] result is 4.263389948 x 10^(58)
or 4.263389948E 58

Represent 135 in scientific notation
135 =1.35 x10^2 or 1.35 E2

Represent 135 in Engineering Notation
If none of the above answers your question, maybe you should state clearly what you want, I am no seer.

Hope it helps.

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Exponential key

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