Răspuns :
Răspuns:
a) 75·42 + 75· 120 = 75·(42+120)=75·162=12150
75·42 + 75· 120 =3150+9000=12150
b) 81 (148 - 59) =81·89=7209
81 (148 - 59)=81·148-81·81·59=11988-4779=7209
c) 114 (123 + 35) = 114·158=18012
114 (123 + 35)=114·123+114·35=14022+3990=18012
d) 342·6-4·342 = 2052-1368=684
342·6-4·342 =342(6-4)=342·2=684