Question

Folosiți asocivitatea si comutativitatea adunarii,calculati sumele:
b) S=200+175+113+37+25+87+163.
c) S=19+32+58+91+42+ 81+68+9+100.
d) S=(13+27)+73+87+21+(79+34)+66.
e) S=13+14+15+100+85+86+87.

Answer 1

B)S=375+150+275 S=525+275 S=800 B=800 C)S=109+214+177 S=323+177 S=500 C=500 D)S=40+181+113+66 S=221+179 S=400 D=400 E)S=42+185+173 S=227+173 S=400 E=400

Answer 2

b)S=200+200+100+200=700
(Aduni 175 cu 25=200,163 cu 37=200,87 cu 13 =100 + 200 =>700)
c)S=100+90+110+100+100=500
(19+81 =100, 58+32 =90,42+68=110,91+9=100,+100=500)
d)S=40+73+87+21+79+100=100+100+40+160=200+200=400
e)S=100+100+100+100=400
(13+87=100,14+86=100,15+85=100+100=400)
Sper ca te-am ajutat!