Question about Calculated Industries Construction Master IV 4045 Calculator

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Rounding up of fractions

When I press a number, say, 2 feet 3 1/2 inches, the calculator automatically rounds the number up to 2 feet, 4 inches. I have a Construction Master IV which is about 8 years old.

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2 Answers

How do you write 8.23 as a fraction

8 & 23/100 or 823/100
Since 23 is a prime number it can't be divided down, so that's as simple as that fraction can become.
If you're also doing rounding though, then it would become 8 & 25/100 or 8 & 1/4

Nov 08, 2016 | Office Equipment & Supplies

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How do I stop my ti 34 ii calculator from automatically rounding numbers in scientific notation?

First, bear in mind that the calculator is going to round numbers eventually, as it can only show a finite number of digits.
You have some control over where and how this rounding takes place. Press [mode], down-arrow, down-arrow, then right-arrow to the choice of decimals desired. Press [enter] to select it.

Feb 24, 2012 | Texas Instruments Office Equipment &...

1 Answer

It automatically rounds the solutions to my fractions as a whole number, how do you stop this?

The number of decimal digits in your display is fixed to 0, so that all decimals are wiped out.
To correct,
Press the MODE button.
On the second line you have FLOAT 0 1 2 3 4 5 6 7 8 9
Move cursor to that line then use right or left arrow to highlight Float or 1 2 3 .. Make sur that the number 0 is not highlighted.

Feb 08, 2012 | Texas Instruments TI-83 Plus Calculator

1 Answer

I have a Casio MS-8TV calculator and want to change the VAT rate to 20% (usage in UK), please. Val

How do I program tax rate into my calculator?
Non-printing models (also applies to HR-8TE printing calculator):

1. Press [AC]
2. Hold [SET/%] key for about 2 seconds
3. Press [TAX+]
4. Input the tax rate
5. Press [SET/%]

Printing models (except HR-8TE):

1. Have calculator in "print" mode
2. Press [CA]
3. Hold [SET/%] key for about 3 seconds
4. Input the tax rate
5. Press [TAX+]
6. Press [SET/%]
^Top I am having a problem registering the ClassPad 300, it keeps telling me my product key is wrong.
Enter only the numerals, not the letters.
^Top What features do our calculators have?
The attached chart shows comparisons of the different calculator models. This includes graphing, scientific and printing calculators. download the chart here
^Top What is the [F CUT 5/4] switch or [DEC] F, 0, 2 button for?
The HR-8TE/HR-8TM have a [DEC] key with F, 0, 2, and 5/4 over it, while many other calculators models have a switch labeled [F CUT 5/4].
The button or switch can control rounding off to a certain number of decimal places. F is floating point (no F indicator on screen), 0 rounds off to 0 places after decimal point, and 2 rounds off to 2 places after decimal point.
The 5/4 applies to either the 0 or 2 modes, and describes the type of rounding off that is performed. The calculator will round down if the digit after the one you are rounding to is 4 or lower, and round up if the digit is 5 or higher.
^Top What is the [5,4,3,2,1,0 ADD (2)] switch used for?
This switch is used to determine how many decimal places your answer is displayed in.
ADD (2) is often used for monetary calculations, so that it is not necessary to enter the decimal point. It is automatically placed two decimal places from the end for cents. For example, entering 123 will display as 1.23.
^Top Why do I get 111.1111... when I calculate 100+10%?
This is a markup on price procedure. The formula is as follows:
Markup%=(Markup Price-Cost)/(Markup Price)
^Top Why do I get the wrong answer when doing a percent calculation?
Make sure that you are following the correct procedure.
Adding 10%: 200 [×] 10 [%] [+]
Subtract 10%: 200 [×] 10 [%] [-]
^Top What tests are calculators permitted for?
AP Calculus requires a graphing calculator.
Any graphing or scientific calculator is permitted on the following as long as it does not have a QWERTY keyboard, electronic writing pad or a pen-input/stylus-driven interface:
AP Statistics (graphing expected)
AP Chemistry
AP Physics

May 27, 2011 | Casio Parts Cash Register PC Desktop

1 Answer

Can't find a manual online. What does 5/4 mean, and how do I turn it off? Same for E. My biggest problem is that when I add up numbers with the print function on (for depositing large batches of...

The manual for the Canon P1-DHV is online at>.
When the display shows "5/4", the calculator is doing 5/4 rounding which means: 5 or above round up, 4 or below round down. To control rounding press the "5/4" key.
When the display shows "E" the calculator could not complete a calculation. It can be because of dividing by 0, or because the total exceeded 1 trillion, or because the operator entered calculations faster than the calculator could complete them. Press the CI/C key to clear it.
I can't explain why you are not getting a total on the tape. Try the following example from the manual exactly as shown, and let me know if your tape shows the total.
  1. Clear the calculator (press [CI/C])
  2. Choose 5/4 rounding (press [5/4] until "5/4" displays)
  3. Choose add mode (press [DEC] until "A" displays)
  4. Choose cost-sell-margin mode (press [B-T] until "B" displays)
  5. Turn printer on (press [PRINT] until "PRINT" displays)
  6. To calculate: $12.55 + $15.75 - $5.30
  7. Key in: 1255 [+] 1575 [-] 530 [=]
  8. Tape shows: [0. C] ... [12.55 +] ... [15.75 -] ... [5.30 =] ... [23.00 *]

Apr 07, 2011 | Office Equipment & Supplies

1 Answer

How to get a Casio out of rounding mode

Press the MODE key a certain number of times, until you reach a screen that displays FIX SCI NORM and numbers 1, 2, and 3 under them. Press 1 key to select the FIX display format, then enter a number between 0 and 9 to set the number of decimal digits you want to keep in your result. In your case the calculator is already rounding so you should select a reasonable number of digits say 2 to 3.
MODE (a certain number of times ....) 1 (FIX) 3 will keep three decimal digits in the results.

Sep 14, 2010 | Casio FX-300MS Calculator

1 Answer

Calculations are automatically rounded.

Look for button with FIX or FSE and then press:
[2nd][FIX][.] and now it's will give the whole number.
Rate me, thanks.

Jan 04, 2009 | Texas Instruments TI-30 XIIS Calculator

1 Answer

Rounding off in Casio FC 200V

Press [SETUP] select FIX then press [EXE]. Enter the number of decimal digits you want (3 or 4). Press [ESC] then press [EXE]
Hope it helps.

Dec 14, 2008 | Casio FC-200V Scientific Calculator

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