Răspuns :
a) 9000:1000=9
99.000:1000=99
909.000:1000=909
990.000:1000=990
999.000:1000=999
b) 9.000-1000=8000
99.000-1000=98000
909.000-1000=908000
990.000-1000=989000
999.000-1000=998000
99.000:1000=99
909.000:1000=909
990.000:1000=990
999.000:1000=999
b) 9.000-1000=8000
99.000-1000=98000
909.000-1000=908000
990.000-1000=989000
999.000-1000=998000
9.000:1000=9;;;99.000:1000=99;;;909000:1000=909;;990000:1000=990;;999000:1000=999;;;;;;;b)9000-1000=8000;;;99000-1000=98000;909000-1000=908000;990000-1000=989000;;999000-1000=998000