Nowadays, people often use the word "arithmetic" to mean mathematics in general. However, *arithmetic* actually refers to the basic operations that occur to numbers, such as addition, subtraction, multiplication, and division. Using these operations together can form expressions in which various values can be represented. These operations will now be considered.

If I am the owner of one tomato, and after searching through the garden I find two more tomatoes, I will have increased my total of tomatoes to three. This process of combining two or more quantities is called *addition*, and the result of an addition is called the *sum*. So, the sum of 1 + 2 is 3.

If after collecting three tomatoes, someone comes along and steals one of my tomatoes, I shall be left with two. The process of reducing one quantity by another is called *subtraction*, and the result of subtraction is called the *difference*. So, the difference of 3−1 is 2. Subtraction is the opposite (or *inverse*) of addition.

Increasing a quantity in terms of multiples means to *multiply* a quantity. For example, 2 × 3 is the same as 3 + 3 + 3. And 4 × 5 is the same as 5 + 5 + 5 + 5. The result of multiplication is called the *product*. So, the product of 7 × 3 is 21.

*Division* is the opposite (or *inverse*) of multiplication. Rather than increasing a quantity, division is the process of determining how many times one quantity fits into another. The result of division is called the *quotient*. The quantity to be divided is called the *dividend*, and the quantity it's divided by is called the *divisor*. So the quotient of 8 ÷ 2 is 4, because 2 (the divisor) fits into 8 (the dividend) exactly four times.

Introduction to Game Programming with C++ (Wordware Game Developers Library)

ISBN: 1598220322

EAN: 2147483647

EAN: 2147483647

Year: 2007

Pages: 225

Pages: 225

Authors: Alan Thorn

Similar book on Amazon

flylib.com © 2008-2017.

If you may any questions please contact us: flylib@qtcs.net

If you may any questions please contact us: flylib@qtcs.net