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Definition of arithmetic
1a : a branch of mathematics that deals usually with the nonnegative real numbers including sometimes the transfinite cardinals and with the application of the operations of addition, subtraction, multiplication, and division to themb : a treatise on arithmetic
2 : computation, calculation
Examples of arithmetic in a Sentence
a software program that will do the arithmetic for you
I haven't actually done the arithmetic yet, but I suspect we're losing money on the deal.
Recent Examples of arithmetic from the Web

The raw arithmetic is that some 44% of British exports go to the EU, 16% to countries with which the EU already has a freetrade deal and about 20% to America.

The arithmetic is a little different this year, because so many of the best players are set for freeagency, but that only matters if the Royals are considering a sellers’ trade.

Bronze, Silver, and 5000series Gold only have a single unit for AVX512 fused multiplyaccumulates, one of the most important arithmetic operations in vector processing.

But the counterintuitive arithmetic of legislative horsetrading means that declaring the bill dead likely requires stiff opposition from twice the number of GOP senators needed to kill it.

Never mind that this valuation was based only on arithmetic, derived from the meagerness of the stake in the company purchased by the latest round of investments.

The new arithmetic of the House of Commons will also makes Brexit negotiations more difficult.

These assumptions include: Both societies can count and do arithmetic.

The arithmetic is against Labour for this reason: After 2014, the Scottish independence referendum, Labour selfdestructed in Scotland, which had been once its stronghold.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'arithmetic.' Views expressed in the examples do not represent the opinion of MerriamWebster or its editors. Send us feedback.
Origin and Etymology of arithmetic
Middle English arsmetrik, from AngloFrench arismatike, from Latin arithmetica, from Greek arithmētikē, from feminine of arithmētikos arithmetical, from arithmein to count, from arithmos number; akin to Old English rīm number, and perhaps to Greek arariskein to fit
Other Mathematics and Statistics Terms
ARITHMETIC Defined for English Language Learners
arithmetic
playDefinition of arithmetic for English Language Learners

: a branch of mathematics that deals with numbers and their addition, subtraction, multiplication, and division

: the act or process of calculating a number
ARITHMETIC Defined for Kids
arithmetic
playDefinition of arithmetic for Students
1 : a science that deals with the addition, subtraction, multiplication, and division of numbers
2 : an act or method of adding, subtracting, multiplying, or dividing
arithmetic
\ˌerithˈmetik\ orarithmetical
\tikəl\ adjectiveLearn More about arithmetic

See words that rhyme with arithmetic Thesaurus: All synonyms and antonyms for arithmetic Spanish Central: Translation of arithmetic Nglish: Translation of arithmetic for Spanish speakers Britannica English: Translation of arithmetic for Arabic speakers Britannica.com: Encyclopedia article about arithmetic
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