Arithmetic/Percents Decimals and Fractions

Conversions between percents, decimals and fractions 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. Previous: ../Grammar/ Next: ../Simple symbolic manipulation/ Return to: Algebra Outline