Question

1. Calculați, folosind factorul comun a) 17•14-4•17 = b) 127•101-127 = c) 1001 •995 +994• 1001-1989 = d) 437•109-437•54+437•203 = e.) 207•41+207 •19+ 207 •5-207•65=. ( dau corona va rog :((((((​

Answer 1

Răspuns:

17×14-4×17=17(14-4)=17×10=170

127×101-127=127(101-1)=127×100=12700

1001×995+994×1001-1989=1001(995+994)-1989=1001×1989-1989=1989(1001-1)=1989×1000=1989000

437×109-437×54+437×203=437(109-54+203)=437×258=112746

207×41+207×19+207×5-207×65=207(41+19+5-65)=207×0=0