1. Calculator For Negative Numbers
2. Google Calculator With Negative Sign

Calculator is courtesy of Eni Generalic (www.periodni.com) You can specify how to round the result (i.e what number of decimal places to display) by using ModeDecimals menu. The numbers can be both positive and negative. To enter negative numbers simply put the minus sign (-) before the number. You can enter expressions containing parentheses. Scientific Calculator. This is a very powerful Scientific Calculator You can use it like a normal calculator, or you can type formulas like (3+7^2).2 It has many functions you can type in. Type in 12+2.3 (=18) Select 'deg', type in cos(45) (=0.865476) Type in 2/sqrt(2) (=1.73095) Function Reference.

The plus and minus signs (+ and −) are mathematical symbols used to represent the notions of positive and negative as well as the operations of addition and subtraction. Their use has been extended to many other meanings, more or less analogous. Plus and minus are Latin terms meaning 'more' and 'less', respectively.

• 8Character codes

History[edit]

Though the signs now seem as familiar as the alphabet or the Hindu-Arabic numerals, they are not of great antiquity. The Egyptian hieroglyphic sign for addition, for example, resembled a pair of legs walking in the direction in which the text was written (Egyptian could be written either from right to left or left to right), with the reverse sign indicating subtraction:^[1]

Nicole Oresme's manuscripts from the 14th century show what may be one of the earliest uses of the plus sign '+'.^[2]

In Europe in the early 15th century the letters 'P' and 'M' were generally used.^[3][4]The symbols (P with line p̄ for più, i.e., plus, and M with line m̄ for meno, i.e., minus) appeared for the first time in Luca Pacioli’s mathematics compendium, Summa de arithmetica, geometria, proportioni et proportionalità, first printed and published in Venice in 1494.^[5] The + is a simplification of the Latin 'et' (comparable to the ampersand&).^[6] The − may be derived from a tilde written over m when used to indicate subtraction; or it may come from a shorthand version of the letter m itself.^[7] In his 1489 treatise Johannes Widmann referred to the symbols − and + as minus and mer (Modern German mehr; 'more'): 'was − ist, das ist minus, und das + ist das mer'.^[8] They weren't used for addition and subtraction here, but to indicate surplus and deficit; their first use in their modern sense appears in a book by Henricus Grammateus in 1518.^[9][10]

Robert Recorde, the designer of the equals sign, introduced plus and minus to Britain in 1557 in The Whetstone of Witte:^[11] 'There be other 2 signes in often use of which the first is made thus + and betokeneth more: the other is thus made – and betokeneth lesse.'

Plus sign[edit]

The plus sign (+) is a binary operator that indicates addition, as in 2 + 3 = 5. It can also serve as a unary operator that leaves its operandunchanged (+x means the same as x). This notation may be used when it is desired to emphasize the positiveness of a number, especially when contrasting with the negative (+5 versus −5).

The plus sign can also indicate many other operations, depending on the mathematical system under consideration. Many algebraic structures have some operation which is called, or is equivalent to, addition. It is conventional to use the plus sign to only denote commutative operations.^[12] Moreover, the symbolism has been extended^{[by whom?]} to very different operations; plus can also mean:

• exclusive or (usually written ⊕): 1 + 1 = 0, 1 + 0 = 1
• logical disjunction (usually written ∨): 1 + 1 = 1, 1 + 0 = 1

Minus sign[edit]

The minus sign (−) has three main uses in mathematics:^[13]

1. The subtraction operator: a binary operator to indicate the operation of subtraction, as in 5 − 3 = 2. Subtraction is the inverse of addition.
2. The function whose value for any real or complexargument is the additive inverse of that argument. For example, if x is 3, then −x is −3, but if x is −3, then −x is 3. Similarly, −(−x) is equal to x.
3. A prefix of a numeric constant. When it is placed immediately before an unsigned numeral, the combination names a negative number, the additive inverse of the positive number that the numeral would otherwise name. In this usage, '−5' names a number just as 'semicircle' names a geometric figure, the difference being that 'semi' does not have a separate use as a function name.

In many contexts, it does not matter whether the second or the third of these usages is intended. −5 is the same number either way. Sometimes, it does make a difference꞉ the programming language APL uses the special character ¯ (Unicode U+00AF) for this purpose so that the interpreter of APL has less work when taking ¯5 as the number −5 rather than inverting the constant 5 by means of the function − above. As described in the next section, some educators consider it important that elementary students realize that negative numbers are genuine entities that can be given names and so use a raised minus in the name of a negative number. Similarly, in the expression language used by Texas Instruments graphing calculators (definitely at least the early models including the TI-81 and TI-82) a raised minus sign is used in negative numbers (as in 2 − 5 shows ⁻3).

All three uses can be referred to as 'minus' in everyday speech, though the binary operator is sometimes read as 'take away'. In most English-speaking countries, −5 (for example) is normally referred to as 'minus five', but in modern US usage it is instead usually called 'negative five'; here, 'minus' may be used by speakers born before 1950, and is still popular in some contexts, but 'negative' is usually taught as the only correct reading.^[14] Further, a few textbooks in the United States encourage −x to be read as 'the opposite of x' or 'the additive inverse of x' to avoid giving the impression that −x is necessarily negative.^[15]

In mathematics and most programming languages, the rules for the order of operations mean that −5² is equal to −25: Powers bind more strongly than the unary minus, which binds more strongly than multiplication or division. However, in some programming languages and in Microsoft Excel in particular, unary operators bind strongest, so in those cases −5^2 is 25 but 0−5^2 is −25.^[16]

Use in elementary education[edit]

Some elementary teachers use raised plus and minus signs before numbers to show they are positive or negative numbers.^[17] For example, subtracting −5 from 3 might be read as 'positive three take away negative 5' and be shown as

3 − ⁻5 becomes 3 + 5 = 8,

or even as

⁺3 − ⁻5 becomes ⁺3 + ⁺5 = ⁺8.

Use as a qualifier[edit]

In grading systems (such as examination marks), the plus sign indicates a grade one level higher and the minus sign a grade lower. For example, B− ('B minus') is one grade lower than B. Sometimes this is extended to two plus or minus signs; for example A++ is two grades higher than A.

Positive and negative are sometimes abbreviated as +ve and −ve.^[18]

In mathematics the one-sided limitx→a⁺ means x approaches a from the right, and x→a⁻ means x approaches a from the left. For example, when calculating what x⁻¹ is when x approaches 0, because x⁻¹→+∞ when x→0⁺ but x⁻¹→−∞ when x→0⁻.

Blood types are often qualified with a plus or minus to indicate the presence or absence of the Rh factor; for instance, A+ means A-type blood with the Rh factor present, while B− means B-type blood with the Rh factor absent.

In music, augmented chords are symbolized with a plus sign, although this practice is not universal as there are other methods for spelling those chords. For example, 'C+' is read 'C augmented chord'. Also used as superscript.

Uses in computing[edit]

As well as the normal mathematical usage plus and minus may be used for a number of other purposes in computing.

Plus and minus signs are often used in tree view on a computer screen to show if a folder is collapsed or not.

In some programming languages, concatenation of strings is written 'a' + 'b', and results in 'ab'.

In most programming languages, subtraction and negation are indicated with the ASCII hyphen-minus character, -. In APL a raised minus sign (Unicode U+00AF) is used to denote a negative number, as in ¯3. While in J a negative number is denoted by an underscore, as in _5.

In C and some other computer programming languages, two plus signs indicate the increment operator and two minus signs a decrement; the position of the operator before or after the variable indicates whether the new or old value is read from it. For example, if x equals 6, then y = x++ increments x to 7 but sets y to 6, whereas y = ++x would set both x and y to 7. By extension, '++' is sometimes used in computing terminology to signify an improvement, as in the name of the language C++.

In regular expressions, '+' is often used to indicate '1 or more' in a pattern to be matched. For example, 'x+' means 'one or more of the letter x'.

There is no concept of negative zero in mathematics, but in computing −0 may have a separate representation from zero. In the IEEE floating-point standard, 1 / −0 is negative infinity (−∞) whereas 1 / 0 is positive infinity (∞).

Other uses[edit]

In chemistry, superscripted plus and minus signs are used to indicate an ion with a positive or negative charge of 1 (for example, NH₄⁺). If the charge is greater than 1, a number indicating the charge is written before the sign (SO₄²⁻). The minus sign is also used (rather than an en dash) for a single covalent bond between two atoms, as in the skeletal formula.

Subscripted plus and minus signs are used as diacritics in the International Phonetic Alphabet to indicate advanced or retracted articulations of speech sounds.

The minus sign is also used as tone letter in the orthographies of Dan, Krumen, Karaboro, Mwan, Wan, Yaouré, Wè, Nyabwa and Godié.^[19] The Unicode character used for the tone letter (U+02D7) is different from the mathematical minus sign.

In the algebraic notation used to record games of chess, the plus sign (+) is used to denote a move that puts the opponent into check. A double plus (++) is sometimes used to denote double check. Combinations of the plus and minus signs are used to evaluate a move (+/−, +/=, =/+, −/+).

Character codes[edit]

The hyphen-minus sign (-) is the ASCII alternative/version of the minus sign, and doubles as a hyphen. It is usually shorter in length than the plus sign and sometimes at a different height. It can be used as a substitute for the true minus sign when the character set is limited to ASCII. Most programming languages and other computer readable languages do this, since ASCII is generally available as a subset of most character encodings, while U+2212 is a Unicode feature only.

There is a commercial minus sign (⁒), which looks somewhat like an obelus, at U+2052 (HTML ⁒).

The + entity is HTML 5.^{[clarification needed]}

Alternative plus sign[edit]

A Jewish tradition that dates from at least the 19th century is to write plus using a symbol like an inverted T.^[20] This practice was adopted into Israeli schools and is still commonplace today in elementary schools (including secular schools) but in fewer secondary schools.^[21] It is also used occasionally in books by religious authors, but most books for adults use the international symbol '+'. The reason for this practice is that it avoids the writing of a symbol '+' that looks like a Christian cross.^[20][21]Unicode has this symbol at position U+FB29﬩HEBREW LETTER ALTERNATIVE PLUS SIGN.^[22]

See also[edit]

• Graft-chimaera for the meaning of + in botanical names
• List of international call prefixes that + can represent the numbers required to dial out of a country as seen in a phone number
• En dash, a dash that looks similar to the subtraction symbol but is used for different purposes
• Asterisk, the star mark ⟨^*⟩ denoting unattested linguistic reconstructions, is sometimes replaced by a superscript plus ⟨⁺⟩

References and footnotes[edit]

1. ^Karpinski, Louis C. (1917). 'Algebraical Developments Among the Egyptians and Babylonians'. The American Mathematical Monthly. 24 (6): 257–265. doi:10.2307/2973180. MR1518824.
2. ^The birth of symbols – Zdena Lustigova, Faculty of Mathematics and Physics Charles University, PragueArchived 2013-07-08 at Archive.today
3. ^Ley, Willy (April 1965). 'Symbolically Speaking'. For Your Information. Galaxy Science Fiction. pp. 57–67.
4. ^Stallings, Lynn (May 2000). 'A brief history of algebraic notation'. School Science and Mathematics. Retrieved 13 April 2009.
5. ^Sangster, Alan; Stoner, Greg; McCarthy, Patricia (2008). 'The market for Luca Pacioli's Summa Arithmetica'(PDF). Accounting Historians Journal. 35 (1): 111–134 [p. 115].
6. ^Cajori, Florian (1928). 'Origin and meanings of the signs + and -'. A History of Mathematical Notations, Vol. 1. The Open Court Company, Publishers.
7. ^Wright, D. Franklin; New, Bill D. (2000). Intermediate Algebra (4th ed.). Thomson Learning. p. 1. The minus sign or bar, — , is thought to be derived from the habit of early scribes of using a bar to represent the letter m
8. ^'plus'. Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005.(Subscription or UK public library membership required.)
9. ^Smith, D.E. (1951). History of Mathematics. 1. Courier Dover Publications. pp. 258, 330. ISBN0486204308.
10. ^Earliest Uses of Various Mathematical Symbols
11. ^Cajori, Florian (2007), A History of Mathematical Notations, Cosimo, p. 164, ISBN9781602066847.
12. ^Fraleigh, John B. (1989). A First Course in Abstract Algebra (4 ed.). United States: Addison-Wesley. p. 52. ISBN0-201-52821-5.
13. ^Henri Picciotto. The Algebra Lab. Creative Publications. p. 9. ISBN978-0-88488-964-9.
14. ^Schwartzman, Steven (1994). The words of mathematics. The Mathematical Association of America. p. 136.
15. ^Wheeler, Ruric E. (2001). Modern Mathematics (11 ed.). p. 171.
16. ^'Microsoft Office Excel Calculation operators and precedence'. Archived from the original on 2009-08-11. Retrieved 2009-07-29.
17. ^Grant P. Wiggins; Jay McTighe (2005). Understanding by design. ACSD Publications. p. 210. ISBN1-4166-0035-3.
18. ^Castledine, George; Close, Ann (2009). Oxford Handbook of Adult Nursing. Oxford University Press. p. xvii. ISBN9780191039676..
19. ^Hartell, Rhonda L., ed. (1993), The Alphabets of Africa. Dakar: UNESCO and SIL.
20. ^ ^abKaufmann Kohler (1901–1906). 'Cross'. In Cyrus Adler; et al. (eds.). Jewish Encyclopedia.
21. ^ ^abChristian-Jewish Dialogue: Theological Foundations By Peter von der Osten-Sacken (1986 – Fortress Press)ISBN0-8006-0771-6 'In Israel the plus sign used in mathematics is represented by a horizontal stroke with a vertical hook instead of the sign otherwise used all over the world, because the latter is reminiscent of a cross.' (Page 96)
22. ^Unicode U+FB29 reference page This form of the plus sign is also used on the control buttons at individual seats on board the El Al Israel Airlines aircraft.

External links[edit]

• The dictionary definition of plus sign at Wiktionary
• The dictionary definition of minus sign at Wiktionary

Why does your calculator say negative 3 square equals negative 9?

Because it thinks that the negative sign is actually another operation to do and because of the order of operations, the calculator squares it first then makes it negative. To fix it, type it in like this (-3)2

What is the change of sign key on a calculator?

The change of sign key converts the value from positive to negative or vice versa. For example, if the number shown in the calculator is 100, clicking the button will convert it to -100. Clicking it again will convert it back to 100.

Is there an online calculator that does negative numbers?

Your standard Windows calculator (or equivalent in another operating system) will do negative numbers.

Does the negative sign come before or after the dollar sign?

Does the negative sign come before or after the dollar sign? The negative sign comes before the dollar sign.

Which are the positive and negative?

The ones with the + sign are positive. The ones with the - sign are negative.

Where is the change sign key on the TI-83 plus calculator?

The sign change key on the TI-83 Plus calculator is located on the bottom row of keys to the left of the ENTER key. It is a white key with black printing that looks like this: (-) You must use this key instead of the blue subtraction key when you need to indicate a negative number; otherwise, the calculator will tell you it doesn't understand what you mean ('syntax error').

How do you raise a number to a negative power on a calculator?

There should be a negative button on your calculator, separate from the minus button. Press that button before pressing the buttons for the numbers of the exponent.

Is the product of 33 negative numbers and 2 positive numbers a positive number or a negative number?

(The product of 33 negative numbers) x (2 positive numbers) = (negative sign) x (positive sign) = negative sign

Where is the times sign on a calculator?

The 'times' sign is the 'X' seriously? NOT ON WINDOWS 7! Lier...

What does the negative terminal of a battery have?

The negative terminal of a battery has a - sign and positive terminal has a + sign.

What is the sign of the product of 11 negative integers and 2 positive integers?

The 2 positive integers don't affect the sign. Every time you multiply by a negative number, the sign changes, so you have negative, positive, negative, positive... Since the number of negative numbers is odd, the end result is negative. The 2 positive integers don't affect the sign. Every time you multiply by a negative number, the sign changes, so you have negative, positive, negative, positive... Since the number of negative numbers is odd, the end… Read More

Is a minus sign a negative sign?

No it is not because 8-5 does not mean that the 5 is a negative sign but my weird mom thinks it is.

How do you determine a work done is positive sign or negative sign?

If work is done on the system then it has a negative sign. If work is done by the system then it has a positive sign.

How can you spell calculator in a calculator?

on a fxMs-82s Casio calculator C A 1 C U 1 A 7 0 (square root sign)

What is a negative multiplied by a negative?

negative*negative=positive negative/positive=negative negativenegative=positve negative-positive=change the sign to a plus and then change the number after the sign and get your answer negative +positive=which ever numbr is bigger minus positive+positive=positive

Why do you use a plus sign for a protron?

Protons hold a positive sign, which is represented by the plus sign. Similarly, electrons hold a negative charge, which is represented by a negative sign.

Why do need a negative sign in Darcy's law?

The negative sign in the equation is conventional and is added because the pressure gradient is negative in thedirection of flow

When you multiply a positive number by a negative what is the sign?

It's negative . Positive*Negative = Negative Negative*Negative = Positive

What is the formation of negative and positive integers?

The pl sign for positive integers and the minus sign for negative integers.

What can you say about the sign of the sum of integers with unlike signs?

Positive + positive = positive Negative + negative = negative Positive + negative will take the sign of the number with the greater absolute value.

Why does the expression -a does not always represent a negative number?

The expression -a does not always represent a negative number because could be negative changing the negative sign in front to a positive sign.

How do you multiply centimeters?

You times them, it's the 'x' sign on the calculator

How does the sign of the product of the positive and a negative number compare withe the sign of the sum of a positive and a negative number?

The product of a positive and negative number is always negative The sum of a positive and negative number depends on which one is larger; subtract the two numbers and take the sign of the larger

How do you put greater sign symbol on the caculator?

Not all calculators support the sign. Check the calculator manual.

How can you determine the sign of the product when multiplying two or more integers?

If there are an odd number of numbers with a negative sign then the sign of the product is negative. Otherwise it is positive.

3 negative and 6 positive numbers are multiplied together. the sign of the product is?

Negative. Positives always give positive sign, two of the negatives cancel out, leave one negative sign.

How do you remove parentheses preceded by a positive sign and a negative sign?

you turn everything inside the prenthises positive or negative

If you have a fraction with a negative sign in front of the fraction how do you make it a decimal?

Calculator For Negative Numbers

Exact same if there was no negative sign, the number is the number.

What is negative 5 cubed?

Google Calculator With Negative Sign

-125 There's a calculator on your computer you know

How do you calculate with the calculator?

Here, let me show you an example of how you do 2 + 2 : *** Press 2, then the plus (+) sign, then 2 again. After that you press the equal (=) sign. Then, the calculator should say 4 on it's screen.