[Simple Math and Notation]
Tags: #math #number #notation #decimal #point #metric #prefix
Simple Math and Notation.md
1.2k = 1.2 * 1000 = 1,200
0.15k = 0.15 * 1000 = 150
Scientific Notation Calculator and Decimal Conversion: https://www.inchcalculator.com/scientific-notation-calculator/
^^ can help understand a value such as ‘E notation’ 2.9e-4 (which equates to 0.00029, i.e. 2.9 * (10/10/10/10) and the 10/10/10/10 is another way of saying 10 to the negative power of 4 which is called ‘logarithm’ 10-4).
Number Notation (inc. metric prefixes, such as G for giga and M for mega):
http://math2.org/math/general/numnotation.htm
4G==4,000,000,0004M==4,000,000
Commas , are used to make reading the numbers easier. They are not supposed to represent ‘decimal’ places.
If decimals were included then a number such as 4G would look more like 4,000,000,000.00.
If you saw the number 42.68G then this really means: 42,000,000,000.68 (NOT: 42.68000000000).
If you saw the number 1.03K(K stands for kilo, meaning thousand) then this really means: 1,030 (e.g. 1.03*1000).
Below is a dashboard that demonstrates this. See the blue line is higher up the y axis which indicates the number is larger, while the red line is a lot lower…
In that image we can also see the ‘average’ value for the red line is 302.99M which means 302,000,000.99. That number is a lot smaller than the average reported for the blue line, which is 42.68G (as that’s 42,000,000,000.68).
Place Value and Rounding:
