Una aproximacion por truncamiento del numero 4,56789 es 4,56 .hallar el error absoluto y el error relativo

Seeing that 4,56789 has 6 digits;

4,56 only has 3 digits 

uncertainty of 4.56789 is 0.00001 
uncertainty of 4.56 is 0.01

0.00001/4,56789= 0.000002189
0.01/4.56=0.002189 

Absolute error of 4.56 is 0.01, relative error is 0.002189 

Hope I helped :)