A fraction has been simplified when the numerator and the denominator have no common factor greater than one.
- to write a fraction as a decimal, divide the numerator by the demoninator;
- to change a fraction, or a decimal, into a percentage, multiply by 100;
- to change a percentage into a fraction, rewrite % as divided by 100.
Order of Operation
The order in which operations are performed can be remember by the mnemonic
Brackets - Indices - Division and/or Multiplication - Addition and/or Subtraction
This will help in remembering the correct priority of operations when completing calculations. Those on the lelf have priority over those on the right.
In index notation, the number being multiplied by itself is called the base. The number written above the base is called the index or power or order.
For example: if the base is 3 and the index is 4 then
Indices is the plural of index
Some powers of 10 have a name called a prefix.
|nano||n||10-9||0.000 000 001|
|pico||p||10-12||0.000 000 000 001|