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Definition: addition from The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide

In arithmetic, the operation of combining two numbers to form a sum; thus, 7 + 4 = 11. It is one of the four basic operations of arithmetic (the others are subtraction, multiplication, and division).

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Boring Old Division, Multiplication, Addition, and Subtraction – Importance and Use of Order of Operations

Lesson 1-2: Addition

From Homework Helpers: Basic Math and Pre-Algebra
To get started, we should begin by reviewing the principles of addition. The symbol for addition is +, and the numbers to be added are called addends . The result of the addition is called the sum . The symbol for what the sum is equal to is the equal sign, =. With addition, the order doesn't matter. The sum 3 + 8 and the sum 8 + 3 are the same. Because the order that we add things doesn't matter, we say that addition is commutative . Sometimes addition is written horizontally: 6 + 3 = 9. Other times addition is written vertically. When written vertically, the horizontal line represents the equal sign. The vertical representation is particularly useful when you are adding two numbers with two or more digits. It helps keep track of the places for the ones, tens, hundreds, etc. by writing the two numbers in a column format with those places aligned: Example 1 Find the sum: 23 + 35 Solution: If the sum of the digits in the ones' column is greater than 9, you will need to carry over to the…
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Full text Article addition

From The Penguin Dictionary of Mathematics
A mathematical operation performed on two numbers ( addends ) to give a third (the sum ). It can also be regarded as the process of increasing one number (the addend ) by another (the augend ). Addition of integers is equivalent to the process of accumulating sets of objects. Addition of fractions…
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Full text Article ADDITION

From Gaither's Dictionary of Scientific Quotations
1+ 1 = 3, for large values of 1. Source undetermined. Si inaequalibus aequalia addas, omnia errunt inaequalia . If equals be added to unequals, the whole will be unequal. Source undetermined. One and one make two But if one and one should marry Isn't it queer Within a year There's two and…
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Full text Article addition reaction

From The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide
addition reaction
Chemical reaction in which the atoms of an element or compound react with a double bond or triple bond in an organic compound by opening up one of the bonds and becoming attached to it, for example: CH 2 CH 2 + HCl → CH 3 CH 2 Cl Another example is the addition of hydrogen atoms to unsaturated…
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Full text Article Western Addition

From The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide
Residential and commercial district in the centre of San Francisco. Located west of the city centre and north of Haight-Ashbury, it is also known as ‘the Fillmore’, after its busiest commercial thoroughfare. Fashionable Victorian mansions were put up in this suburban addition to the city in the late…
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Full text Article addition

From The Macquarie Dictionary
the act or process of adding or uniting. Plural: additions the process of uniting two or more numbers into one sum, denoted by the symbol + . Plural: additions anything added. Plural: additions noun often plural /7'd147n/ /uh'dishuhn/ wings, rooms, etc., added to a building, or land added to…
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Full text Article addition

From The American Heritage(R) Dictionary of the English Language
Mathematics a. The operation that, for positive integers, consists of increasing by a definite number of increments of 1. The operation is extended to other numbers according to the additive properties of positive integers and other algebraic properties. b. Any of certain analogous operations…
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Full text Article addition

From Shakespeare's Theatre: A Dictionary of His Stage Context
For Shakespeare this word meant the honorific titles added to a person’s name, as when the triumphant Macbeth is greeted by Ross on behalf of the king: ‘He bade me, from him, call thee, Thane of Cawdor; In which addition, hail’ (1.3.105–6). Such titles may now seem pompous and confusing because of…
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Full text Article addition reaction

From Science Encyclopedia: Encyclopedia of Chemistry
A chemical reaction of two or more reacting molecular entities, resulting in a single reaction product containing all atoms of all components, with formation of two chemical bonds and a net reduction in bond multiplicity in at least one of the reactants . The reverse process is called an elimination…
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Full text Article addition polymerization

From The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide
Polymerization reaction in which a single type of monomer gives rise to a single polymer, with no other reaction products. Addition polymerization occurs in alkenes , hydrocarbons containing double bonds. The alkenes, such as ethene , are the monomers, the small starting molecules. In addition…
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Full text Article addition

From Collins Spanish Dictionary
[N] 1 Math adición f, suma f • if my addition is correct si he sumado bien • to do addition hacer sumas 2 (= act ) adición f • in addition además • in addition to además de • with the addition of a cardigan, it makes the perfect summer outfit añadiendo una chaqueta, es el conjunto perfecto para el…
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