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Absolute Value

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Absolute value shows How far a number is from zero.

Example6” is 6 units away from zero, and “-6” is also 6 away from zero.

So, the absolute value of 6 is 6, and the absolute value of -6 is also 6.

The symbol “|” is placed either side to mean “Absolute Value“, so we can write: |-6| = 6

 

Abscissa

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Abscissa is the “x“ value in a pair of coordinates. It’s always written first in an ordered pair of coordinates such as (12,5).In the example above, the value “12” is the abscissa. (The second value “5“ is called the Ordinate)

Abacus

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An abacus has beads that slide on rods. It can be used to count, add, subtract, multiply and more. Read the rest of this entry »

Basic Math Definitions

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The Basic Operations

In basic mathematics there are many ways of saying the same thing:

Symbol
Words Used
+
Addition, Add, Sum, Plus, Increase, Total
Subtraction, Subtract, Minus, Less, Difference, Decrease, Take Away, Deduct
×
Multiplication, Multiply, Product, By, Times, Lots Of
÷
Division, Divide, Quotient, Goes Into, How Many Times

Addition is …

… bringing two or more numbers (or things) together to make a new total.

addition

Subtraction is …

… taking one number away from another. Read the rest of this entry »