Răspuns :
1 + 97 + 2 + 999 + 3 + 198 =
= (1 + 999) + (2 + 198) + (3 + 97)
= 1000 + 200 + 100
= 1300
1+97+2+999+3+198=1000+97+2+3+198
=1000+100+2+198
=1100+2+198
=1100+200
=1300
1 + 97 + 2 + 999 + 3 + 198 =
= (1 + 999) + (2 + 198) + (3 + 97)
= 1000 + 200 + 100
= 1300
1+97+2+999+3+198=1000+97+2+3+198
=1000+100+2+198
=1100+2+198
=1100+200
=1300