Addition and Subtraction
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[edit] ARITHMETIC
[edit] Simple Addition
Simple addition involves putting the value of two or more integers together and making them one. Addition is sometimes called summing. However, it is always represented by the sign +.
Examples:
- 1+1 = 2
- 1+2 = 3
- 2+2 = 4
Or
The addition of 1 and 1 is equal to 2. The sum of the values 1 and 2 is three. The addition of the integer 2 to the integer 2 is equal to 4
This is addition of simple integers. More complex integers such as decimals and fractions can be added together.
[edit] Addition of Negative Numbers
Sometimes in Mathematics adding a negative number may be required. Where this is the case you subtract the negative integer from the initial number.
For Example:
- 1 + (-2) = 1 - 2 = -1
- 4 + (-2) = 4 - 2 = 2
- -2 + (-2) = -2 - 2 = -4
The addition of a negative two to the value one = negative one.
