โž— Math

Percentage

Exercise / ProblemFormula
1 percent= 1/100 => 0,01
"x" + 19 percent= x * (1,00 + 0,19)
"x" - 19 percent= x * (1,00 - 0,19)
19 percent of "x"= x * 0,19

Note

With gross-net conversions, you have to be very careful here not to make a mistake
have a look at gross-net problem

Basic Calculation

Exercise / ProblemFormula
"x" are how many percent of 120 euro?= x / 120 * 100
120 euro are how many percent of "x" euro?= 120 / x * 100

Pythagoras

The length of a hypotenuse "c" in a right triangle is the square root of the sum of the respective squared sides "a" + "b" => aยฒ + bยฒ = cยฒ

Power of ten

power of tennamenumberprefixsymbol
10^-100googolth100 decimal places--
10^-24quadrillionth0.000000000000000000001Yoktoy
10^-21trillionth0.00000000000000001zeptoz
10^-18trillionth0.0000000000000001Attoa
10^-15quadrillionth0.0000000000001femtof
10^-12trillionth0.000000000001pikop
10^-9billionth0.000000001nanon
10^-6millionth0.000001microฮผ
10^-5hundredths0,00001--
10^-4ten-thousandth0.0001--
10^-3thousandth0,001millim
10^-2hundredth0.01centic
10^-1tenth0.1decid
10^0one1--
10^+1Ten10Decada
10^+2hundred100hectoh
10^+3thousand1000kilok
10^+4ten thousand10000--
10^+5hundred thousand100000--
10^+6million1000000megaM
10^+9Billion1000000GigaG
10^+12trillion10000000000TerraT
10^+15quadrillion10000000000000PetaP
10^+18Trillion10000000000ExaE
10^+21Trillion100000000000000000ZettaZ
10^+24Quadrillion1000000000000000000YottaY
10^+100GoogolA 1 with 100 zeros--

Note

If there are any serious errors in the summary, please contact here.

Last Updated:
Author: Benedikt Handschuh