Question

folosind asociativitatea si comutativitatea adunarii ,calculati sumele:
a) S=3+12+45+97+17+83+55+88+100
b)S=200=175=113+37+25+87+163.

Answer 1

s=(3+97)+(12+88)+(45+55)+(17+83)=100+100+100+100=400
s=200=175+25)+(113+87)+(37+163)=600