Question about Calculated Industries Construction Master IV 4045 Calculator

1 Answer

Calculator rounds up fractions when adding or subtracting numbers

When I press in a number, say, 2 feet, 3 1/2 inches, the calculator automatically rounds up to 2 feet, 4 inches. Is there a function key that can stop this?

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 41 Answers

Type in

Posted on Jan 05, 2010

  • anderza
    anderza Jan 05, 2010

    2(feet)3(inch)1(/)2 The words or symbols in () is function key



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Answer always appearing

Minus and change-sign are two completely different things. Minus is used to subtract one number from another. When you press minus when the input line is empty, your telling the calculator to subtract. The only way it can subtract the number you're about to put in is to subtract it from something else, and that something else is the previous answer, hence the "Ans."

If you want to input a negative number, use the change-sign key. If you want to subtract one number from another number, use the minus key.

Try pressing the plus key when the input line is empty. You'll get Ans+ in this case as well, The same with multiply and divide, among others, and for the same reason.

Sep 23, 2013 | Texas Instruments TI-84 Plus Calculator

1 Answer

How to calculate mode with caso fx-991ES

MOD simply calculates the remainder that is left over after dividing by the MOD parameter.
For example, 10MOD7 = 3 since you can only divide 7 into 10 once, leaving a remainder of 3.
For larger numbers, eg 389487MOD31 you start by dividing 389487 by 31, which gives 12564.09677 (on the display), however you only want the fractional part so subtract 12564 to give 0.0967741935 . This includes the lower value digits that were previously hidden. Then multiply this result by 31 which gives 2.999999999 on the display. Since the result of a MOD calculation has to be a whole number, the answer needs to be rounded to 3. If the answer doesn't easily round to a whole number, it is likely that you have gone beyond the calculators working capacity.
An alternative method is to take the integer part of the first result (12564) and multiply it by 31 to get 389484, then subtract this from 389487, giving the answer of 3.

Feb 23, 2013 | Casio FX991ES Scientific Calculator

1 Answer

How to calculate 1.025^4

How to Use a TI-30XA
The TI-30XA is a scientific calculator with many functions. You can calculate problems with fractions and decimals, as well as solve problems of probability and functions. A scientific calculator computes the number sentence you type in using the order of operations: parentheses first, then roots and exponents, then division and multiplication and, finally, addition and subtraction.

  1. How to Use a TI-30XA
    • 1

      Press the [ON/C] key to turn on the calculator. Press the [OFF] key to turn it off. To use the calculator in solar mode, put the solar panel in the light and then press the [ON/C] key. To turn it off when in solar mode, slide the calculator cover back on and it will automatically shut off.

    • 2

      Replace the batteries by first removing the cover and placing it face down. Use a Phillips-head screwdriver to unscrew the back panel. Remove the back panel and change the batteries. Screw the back panel back on. Press [OFF] [ON/C] and [ON/C].

  • Use the basic operation keys for addition [+], subtraction [-], multiplication [x] and division [/]. To change the signs of your values from positive to negative or vice versa, press the [+ -] key before the numbers you enter. Use the parentheses, [(] and [)], to command the calculator to solve what is inside the parentheses first. Press the [=] to solve the number sentence you entered into the calculator.

  • 4

    Find percents of a number by first typing in the number, then [x], then the percent number, [2nd], [%] and, finally, [=]. The [2nd] key allows you to use the commands that are written above each key. For example, to find 20% of 100, type in 100 [x] 20 [2nd] [%] [=] and the display will show the answer, 20.

  • 5

    Turn decimals into fractions by entering the decimal value, then pressing the [2nd] and [F D] keys, then [=]. Turn the fraction back into a decimal by pressing [2nd] and [F D] again. For example, to turn 0.5 into a fraction, type in 0.5 [2nd] [F D] [=].

  • 6

    Turn mixed numbers into improper fractions by entering the mixed number first. Type in the whole number, then the [a b/c] key, then the numerator, the [a b/c] key again and the denominator. Next, press [2nd] [d/c] [=], and the calculator will convert your mixed number into an improper fraction. Press [2nd] [d/c] again to turn it back into a mixed number. For example, to turn 1 1/2 into an improper fraction type in 1 [a b/c] 1 [a b/c] 2 [2nd] [d/c] [=], and the display will show the answer 3/2.

  • 7

    Switch the notation setting of the calculator between engineering, scientific and floating. To select scientific notation, press the [2nd] and [SCI] keys; this will display your answers in scientific notation as a number between 1 and 10 to a power of 10. Press [2nd] [ENG] to switch to the engineering setting; this setting displays values as a number with an exponent that is a multiple of 3. Press [2nd] [FLO] to switch to the floating setting. This is considered standard notation and will display the answer as a standard number.

  • 8

    Use the left arrow key to go back and delete numbers to the right of the cursor that you typed into the display. This must be done before you press [=]. To clear the screen, values and operations, press [ON/C] and [ON/C] again in battery mode, or [CE/C] and [CE/C] again in solar mode.

  • Hope it helps your problem. Thanks!

    Jan 03, 2013 | Texas Instruments TI-30XA Calculator

    1 Answer

    My calculator will add, but after my total and then I want to subtract, it subtracts by the number I added.

    If your calculator is more of an adding machine it works a little bit differently than a calculator. For an example: 10 + 5 - 2 on your machine do the addition of 10 + 5, then to subtract the 2 press 2 then the minus sign to get the total of 13. I hope this is helpful.

    Feb 06, 2011 | Canon Office Equipment & Supplies

    1 Answer

    Where do I go to find an on-line manual for TI 5045 Sv Texas Instruments calculator?

    TI-5045 SV
    English.............................................................. 1
    Fran?ais ............................................................ 6
    Espa?ol ............................................................. 11
    Portugu?s ........................................................... 16
    Examples, exemples, ejemplos, exemplos .............................. 21
    Removable tab
    Leng?eta extracci?n
    Alavanca usada para o rolo
    Ink roller
    Rouleau encreur
    Tamp?n de tinta
    Cartucho de tinta
    Your Texas Instruments calculator has a built-in printer for producing a permanent record printout of
    your calculations with negative numbers printed in red. A big, easy-to-read display also enables you to
    check entries or perform quick calculations without printing.
    1. Connect the calculator to a proper power outlet (110-120V or 220-240V
    where available).
    2. The calculator is turned on by setting the POWER switch to the PRT
    Inserting the paper (see illustrations 1, 2, 3, and 4 on page ii).
    1. Turn on the calculator.
    2. Open the printer compartment cover by pressing down on its front edge and sliding it back in the
    direction of the arrow.
    3. Fit the roll of paper on the holder so that it unrolls from the bottom, with the loose end toward the
    4. Cut the end of the paper squarely and insert it firmly into the printer slot on the back of the
    5. Press & until the paper is in the printing position.
    Replacing the ink roller (see illustrations 5 and 6 on page ii)
    1. Turn the calculator off and tear off the excess paper.
    2. Remove the printer cover by pressing down on both sides of the front edge and sliding back in the
    direction of the arrow.
    3. Remove the old ink roller by lifting it with the removal tab.
    4. Insert the new ink roller into the compartment and press down gently until it snaps into place. Close
    the printer compartment.
    Note: The old ink rollers should not be refilled. Replacement rollers can be obtained from your local
    retailer. The warranty does not cover ink roller replacement.
    : 5/4 9 + F 0 2 3
    Set the POWER, ROUND, DECIMAL and TAX switches as required.
    Note: The TAX switch is spring-loaded to return to CALC when it is moved to SET and released.
    The switch settings are summarized in the following table:
    No printout is provided; however, the display can be printed by pressing
    The printer provides a printout of your calculations but does not count them.
    The printer is on and an item count of additions and subtractions to or from
    the register is printed when sub-totaled or totaled.
    The GT position controls whether or not the totals from the independent add
    register are accumulated in the grand total register.
    ROUND Rounds the result of a calculation to the selected number of decimal places.
    Truncates the result to the selected number of decimal places.
    Rounds the result up or down according to its value. For example, when the
    DECIMAL switch is set to 2, the result is rounded up if the third decimal
    position is 5 or more and rounded down if it is 4 or less.
    Rounds the result up to the selected number of decimal places.
    Ex. 220 P 6
    Setup: PRINTER: PRT, ROUND: :
    Ex. 220 P 6
    Setup: PRINTER: PRT, ROUND: 5/4
    Press Display Printout Press Display Printout
    2 0. 0¦ C
    220 ' 220. 220¦ P
    6 3 36.66 6¦ =
    36¦66 ?
    2 0. 0¦ C
    220 ' 220. 220¦ P
    6 3 36.67 6¦ =
    36¦67 ?
    DECIMAL + Add mode: All results are given with two decimal places. For addition and
    subtraction only, a decimal point is automatically placed to the left of the last
    two digits entered, unless the number already includes a decimal point.
    F Floating mode: Any results are displayed and printed with the maximum
    number of decimal places.
    0 2 3 4 Fixed decimal mode: Sets the number of decimals to 0, 2, 3, or 4.
    Lets you enter a tax rate to perform tax calculations.
    Stores the tax rate. Pressing ! or " after a tax rate has been entered,
    adds/subtracts the stored tax rate to/from the value in the display.
    Ex. VAT = 17.5 %
    100 + VAT
    Ex. VAT = 17.5 %
    235 - VAT
    Move and hold the TAX switch to SET. Press 217 L 5 and release the TAX switch. It
    automatically returns to CALC. 17.5% is printed.
    Press Display Printout Press Display Printout
    2 0. 0¦ C
    100! 117.5 100¦
    17¦5 @
    117¦5 ?
    2 0. 0¦ C
    235" 200. 235¦
    N35¦ @
    200¦ ?
    Note: The most common setup is POWER: PRT, ROUND: 5/4, DECIMAL: 2, TAX: CALC. Use these
    positions for the examples unless other settings are given.
    Basic keys
    I Clear Entry: Clears an entry, enabling you to enter another number in its place. Note
    that this key does not clear the add register.
    2 Clear Key: Clears the add register, any pending operations, and the display. 0.C is
    printed. Does not clear the memory.
    ( Right Shift: Deletes the right-most digit entered from an entry before an operation key is
    pressed. Shifts the remaining digits one place to the right.
    L Decimal Point: Enters a decimal point.
    4 Date/Non-Add: Prints a date (such as 12¦10¦96) or a number for reference purposes.
    Does not affect calculations. This entry is printed on the left side of the printout, the date
    or number preceded by the # sign.
    & Paper Advance: Advances the printing paper.
    Addition and subtraction keys
    9 Add: Adds a number to the add register. Displays the cumulated result.
    : Subtotal: Gives the intermediate total from the add register. Using this key does not
    affect the contents of the add register.
    . Subtract: Subtracts a number from the add register. Displays the cumulated result.
    E Total: Gives the total from the add register, and then clears the register.
    Multiplication, division, percent and margin keys
    ? Multiply: Multiplies the number in the display by the next value entered.
    ' Divide: Divides the number in the display by the next value entered.
    3 Equals: Completes any pending multiplication or division operation.
    > Percent: Calculates percentages, ratios, add-ons (e.g. of VAT), or discounts.
    # Gross Profit Margin: Calculates the selling price of an item when its cost and gross
    profit (or loss) margin are known; also used to obtain a price excluding VAT.
    Cost: 594
    Profit margin: 40%
    Press:2 594 # 40 3
    Selling price: 990
    Gross profit: 396
    Selling price including VAT: 252
    VAT %: 20%
    Press: 252 # 20 . 3
    Selling price excluding VAT: 210
    VAT: 42
    / Grand Total: Gives the grand total of the operations previously performed and stored in the
    Grand Total register. Every time a total is obtained with E it is cumulated into this register
    (printout shows G+) which is only cleared when / is pressed twice. During long
    calculations, if / is not used, this re

    Jan 16, 2011 | Office Equipment & Supplies

    1 Answer

    How do you do a fraction on a sharp el531w

    Hi eamon at hom,

    Doing fraction on the Sharp El 531W really isn't that bad. I had to use pictures because, the symbols will not transfer over to your posting for me to show you. When you select the [ON/C] this clears the calculator of previous calculations and, data so that they won't interfere with your new calculations.

    Let take the first example where a mix number is being added to a improper fraction. Because I used the [a^b/c] key this makes the calculator display the answer in a mixed fraction format or, a proper fraction format. If I press the [a^b/c] key again after the answer the format will change to a decimal format. The fractional formats are displayed in a mixed number, improper or, proper fraction formats. A improper fraction is really a proper fraction number with the top number (numerator) is greater than or equal to the bottom number (denominator).

    [ON/C] [3] [a^b/c] [1] [ [a^b/c] [2] [+] [4] [a^b/c] [3] [=] mixed number results. Now let's do the same calculation as a improper or, proper fraction format.
    [ON/C] [7] [a^b/c] [2] [+] [2] [a^b/c] [3] [=] still a mixed number result. Even though I enter the fractions in a improper and, proper fraction formats the calculator will still display in a mixed number format. This is because the calculator first displays as a mixed number if it can. If it can't then it will display the value as a proper fraction and, never as a improper fraction. To convert from a mixed number to a improper fraction format if the calculator did not convert it to a proper fraction, I have to use [2ndF] [d/c] keys on the command line.

    This show a little more complex raised power use of the [a^b/c] key.
    This shows the [2ndf] [x^-1] keys being used to calculate fractions.

    When I first saw this question being asked it, was answered with just use the / command. Which that isn't really a good answer because, in math we like to use elimination. If you use the / command eventually the numbers are going to be rounded off and, your not going to be able to eliminate anything. If you have any further question on how to preform fractions with this calculator be sure to post your comment and, I'll be glad to help.

    Jan 13, 2011 | Sharp EL-501WBBL Calculator

    1 Answer

    How do you subtract fraction on a caluclator. problem: 6/7-2/5

    A fraction is just a number like (almost) any other. On most calculators, as you enter 6/5 the calculator displays its decimal value. When you press - the calculator waits for a number 2 then / then 5. Once you press the equal sign it will calculate 2/5 then subtracts it from the preceding result. The priority rules favor multiplication and division over addition and subtraction.

    On some calculators you can keep a fraction in fraction format and operate on it with other fractions, and the result may be obtained as a fraction.
    The gist of the story is that ON A CALCULATOR operations on fractions as performed like operations on any number.

    Dec 20, 2009 | Sharp Office Equipment & Supplies

    1 Answer

    Adding and subtracting lengths of measurements

    You can use the units menu (2nd > 3) to place a unit after some number you want to qualify as being an unit, or you can just type them in like 5_ft + 6_in. Note that you need to add on each part if you are doing mixed measurements; there is no _ft_in combination. So just add each manually - in your case you would do (5_ft + 6_in) - (2_ft + 8_in)

    Oct 14, 2008 | Texas Instruments TI-89 Calculator

    10 Answers

    Fractions, mixed numbers, and variables.

    type the whole number then hit the ABC button then type the numerator then hit ABC then type the denominator

    1ABC1ABC2 + 1ABC1ABC2=3

    Jan 16, 2008 | Texas Instruments TI-30XA Calculator

    Not finding what you are looking for?
    Calculated Industries Construction Master IV 4045 Calculator Logo

    536 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Calculated Industries Office Equipment & Supplies Experts

    Vernon Taylor

    Level 3 Expert

    4300 Answers

    Joe Garcia
    Joe Garcia

    Level 2 Expert

    205 Answers


    Level 2 Expert

    51 Answers

    Are you a Calculated Industries Office Equipment and Supply Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides