A1, A2, A3

Question 1

How can the percentage uncertainty of a multiplied value be approximated?

Answer 1

X = A * B * C

%U_X = %U_A + %U_B + %U_C

Question 2

How can the percentage uncertainty of a divided value be approximated?

Answer 2

Y = A/B is the same as Y = AB^-1

%U_Y = %U_A + %U_B

Question 3

How can the absolute uncertainty of an added value be approximated?

Answer 3

Z = A + B

U_Z = U_A + %
U_B