Question

Folosindv asociativitatea si comutativitatea adunarii calculati sumele: a: 400+257+331+60+25+40+169
b: 29+62+48+99+52+71+38+1+100
c: (13+27)+73+87+21+(79+34)+66
Ma ajuta cineva?

Answer 1

Răspuns:

a) 400+(60+40)+(331+169)+257+25=400+100+500+282=(400+100)+500+282=(500+500)+282=1282

b)(29+71)+(62+38)+(99+1)+(52+48)+100=100+100+100+100=400

c)(27+73)+(13+87)+(21+79)+(34+66)=100+100+100+100=400