Arithmetic/Percents Decimals and Fractions
Conversions between percents, decimals and fractions
[edit | edit source]The perhaps easiest way to convert from:
Decimal to fractions is by simply moving the period over 2 and putting it over a 100
(ex) Express .50 as a fraction
.500 = 50.0 = 50/100 = 1/2 . >. (this means the moving of the dot)
usually the best way to set it all up is the following
------------------------------
| fraction | Decimal | percent |
| ? | ? | 50% |
------------------------------
(move 2 to the right) <-- x -->(move dot over 2 to the right)
(and put over 100)
When converting decimal to fraction When converting from decimal to percent
always be sure it has 2 place to the this always works
right of the (.) ? = 50.% if its not known, do the "reverse"
(ex) .5 = .50 = ? = 50 .50 <--.
.--> --- ---
100 100
When reading decimals, it is similar to verbalizing a fraction. For example, 0.2 is spelled out as "two-tenths", hence 2/10, which simplifies to 1/5. What if you had the real number 0.002? Same principle: "two-thousandths" implies 2/1000, which reduces to 1/500.
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