Question

Calculeaza grupand convenabil termenii:
110 + 120 + 130 + 140 + 150 + 160=
1 400 + 1 500 + 1 600 + 1 700 + 1 800+ 1900=
210 000 + 220 000 + 230 000 + 240 000 + 250 000 + 260 000=



dau coroana si 200 de puncte urgent va rooooooooooooooog!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

110+(140+160)+(120+130)+150+(1400+1600)+(1700+1800)+1500+1900=
=110+300+250+150+3000+3500+1500+1900=
=110+300+(250+150)+3000+(3500+1500)+1900=
=110+300+400+3000+5000+1900=
=410+300+400+3000+5000+1900=
=710+400+3000+5000+1900=
=1110+3000+5000+1900=
=4110+5000+1900=
=9110+1900=
=11010




(220000+230000)+(210000+240000)+250000+260000=
=450000+450000+250000+260000=
=(450000+450000)+250000+260000=
=900000+250000+260000=
=1150000+260000=
=1410000