Question about HP 10bII Calculator

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Addition of significant numbers

Hi, I would really appreciate if you could tell me how I may add more than 2 significant numbers which appearing on the screen of my calculator. Thanks

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Press SHIFT DISP then a digit for the number of digits desired after the decimal point.

Posted on Sep 03, 2013

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SOURCE: Addition Problem with HP 17BII

do a self test

1. Turn the calculator on.
2. If you have the optional infrared printer, turn it on. Certain diagnostic
information is printed during the test.
3. If possible, return to the MAIN menu (press @A).
4. To start the self-test, hold down C while you press the fifth menu
key from the left. Once the self-test has begun, do not press any keys
until you are ready to halt the test.
5. During the test, the calculator beeps periodically and displays various
patterns and characters. Watch for one of two messages that are
displayed before the test automatically repeats:
􀂄 If the calculator passes the self-test, the calculator displays
        
􀂄 If the calculator displays     followed by a five-digit number,
the calculator requires service.
6. To halt the self-test, hold down C while you press the third menu
key from the left. The calculator displays             . If you
press any other key instead, the test halts and the calculator displays
a     message. This results from an incorrect key being pressed,
and does not mean that the calculator requires service.
7. If the calculator failed the self-test, repeat steps 4 through 6 to verify
the results. If you do not have a printer, write down the messages that
are displayed in step 5.

Posted on Jan 01, 2009

  • 100174 Answers

SOURCE: when i turned on my calculator and began typing

Adjust the screen contrast. Turn the calculator on. Press and release the 2nd key, then press and hold the up-arrow key until the numbers darken. If you go too far, repeat the process with the 2nd and down-arrow keys.

Posted on Mar 22, 2011

  • 2 Answers

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Posted on Jan 02, 2017

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Related Questions:

1 Answer

What is a sum.

The sum is the result of an addition.
When you add two numbers, the result you find is the sum of the two numbers.
15+10=25. The sum of 15 and 10 is 25.

Sep 22, 2014 | Office Equipment & Supplies

1 Answer

Phasor addition on classpad 330

Open up keyboard, go to 'cat' tab and scroll down to get ' <( ' symbol.

Input the magnitude followed by angle separated by a comma (E.g. <(15,10) ). The first element in the bracket is the magnitude of the phasor while the second element is the angle.

To do phasor addition simply add more of the '<(' symbol. (E.g. <(15,10) + <(12,5) is the addition of phasor_1 with magnitude 15 and angle 10 and phasor_2 with magnitude 12 and angle 5 ).

Note: the symbol ' <( ' appears at the very bottom of the list and the '<' symbol is actually more flat in appearance like how a normal phasor is usually represented.

Apr 09, 2014 | Casio ClassPad 330 Graphing Calculator

2 Answers

Significant figures

Press SHIFT MODE 6 then select the desired number of digits after the decimal point. Alternatively, press SHIFT MODE 7 then select the desired number of significant digits.

Sep 09, 2013 | Casio FX-115ES Scientific Calculator

2 Answers

How do i enter this question on a ti 89? 5 sin(2 pi 2000 t +60 degrees) does anybody know i would appreciate it.

Hi ssmith63,
Put the calculator in radian angle mode. The top answer is in AUTO mode and, The bottom is in Approx mode.

I converted 60 degrees into pi/3 radian which equals 1.0472 radians. I figured 5 significant digits was good enough since, you only went 4. If you have any question just post them and, I'll respond quickly.

Jan 15, 2011 | Texas Instruments TI-89 Calculator

1 Answer

How to turn printing on and off?

PRINT KEY: To save paper you can only print what is displayed, even in non-print mode. Pressing after the entry of a number will print the entry with the symbol “#” even in non-print mode. Pressing will insert a separator into a number entry such as a code, date, etc. Separators are displayed as a period and dashes but printed as periods. MEMORY + KEY / PRINT ON / OFF KEY: Pressing selects print mode or non-print mode. Cause the calculator to operate in a display / print or display only mode, depending upon the calculator’s present state. “P” on the display: Print mode. “NP” on the display: Non-print mode. MEMORY – KEY / DECIMAL SELECTION KEY: Pressing sets the number of decimal places in the result. “F” on the display: The answer is displayed in the floating decimal system. “3, 2, 1, 0” on the display: Presets the number of decimal places in the answer. “A” on the display (Add mode): The decimal point in addition and subtraction entries is automatically positioned to the 2nd digit from the lowest digit of entry number. Use of the add mode permits addition and subtraction of numbers without entry of the decimal point. Use of , and will automatically override the add mode and decimally correct answers will be printed.

Aug 18, 2010 | Sharp EL-1611P Calculator

1 Answer

When i enter a log. problem the calculator will not give me decimals beyond the tenth place

If you look at the screen you will notice that it is limited. It can only display a certain number of symbols (numbers, letters, signs). Furthermore, its memory capacity is also limited. Being just a calculator, it can only give you approximate values. However, even if it can display 10 decimal digits only, it is performing calculations with 12 to 15 digits. The precision it is giving is more than your problem has in the first place. How precise are the numbers you are entering? In science one talks about significant digits. Digits that really mean something.

What, pray tell, do you need the others (how many) for? Are you worried about losing precision? At this level of precision, you can enter any number of arbitrary digits you want after the result calculated. It will not make the slightest bit of a difference (1 in 10 billion).

If you have a problem with too many zeros before the actual significant digits, use the scientific display format or the engineering display format. But I do not think it is the problem, because the calculator automatically reverts to scientific notation if the numbers are too small ot too large.

Hope it helps.
Thank you for using FixYa and for rating this solution.

Dec 03, 2009 | Casio FX-300MS Calculator

1 Answer

How do I add and subtract on this thing?

I do know what calculator you have but on most calculators you have digit keys to key in numbers, operation keys (multiplication, division, addition, subtraction), function keys (log, exponential, %, square root, square or a power) and you have the = key to obtain the result of the calculation.

Press the [ON] button

To add 2 numbers, exemple 12 and 13
12 [+ key] 13 [= key]. Calculator displays 25, or 25.00 or 25.0000...

To subtract
13 [- key] 7 [=key] . Calculator displays 6 or 6.00, 6.0000....

To multiply
32 [x key] 5 [= key]. Calculator displays 160.

You may have memory keys, to store values. They may be labeled M to enter a number in memory, M+ to add a number to the one already in memory, M- to subtract from the number already in memory.

Hope it gets you started.

Oct 10, 2009 | Canon Office Equipment & Supplies

1 Answer

How do I add Exponents on my T1-30xa calculater

There is a rule of Algebra, that says
(a^m)[x] (a^n) = a^(m+n)

a is the base of the power, n, and m are the exponents. As you can see, multiplying two powers of the same base is equal to the power of the (common) base with the sum of the exponents.
If that is what you had in mind, the calculator uses the rule correctly and no intervention from you is necessary.
If you enter (2^4)[x](2^6), the calculator will give 1024, which is 2^10.

I may be wrong, but what you call add exponents refers really to performing addition where addends (the terms you add) are arbitrary powers, such as
2^7 + (5.5^3) - (1/3)^4

Once you enter a power term, the calculator calculates it and the result is now just a number. It can be added, subtracted, multiplied

For the exemple above
2 [Y to the x] 7 + (5.5)[Y to the x] 3 -(1/3) [Y to the x] 4 [=] yields 294.3626543

For the cube of 5.5 you can use the key combination [2nd][X^3]

Hope it helps.

Oct 08, 2009 | Texas Instruments TI-30 XIIS Calculator

1 Answer

How to add mixed fractions

Use the fraction mode to enter the fractions and use the addition operation like you do for any number.
Calculate 2 3/7 + 4 5/19

2 [ab/c]3 [ab/c] 7 [+] 4[ab/c] 5[ab/c] 19 [=]
Result is 6 92/133 or 890/133
Hope it helps.

Aug 05, 2009 | Casio FX-300MS Calculator

1 Answer


Check the Decimal / Add Selector. It shoul be set to "A" (Add mode), to permit addition and subtraction of numbers without entry of the decimal point.
You may also want to download the SHARP
EL-1801P Operation Manual

Jun 22, 2009 | Sharp EL-1801P Calculator

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