Răspuns :
Răspuns:
1 (3+2+4)•10=
9•10=90
2 (3+2+4)•10=
3•10+2×10+4×10=30+20+40=90
1 (5+1+2)•9=
8•9=72
2 (5+1+2)•9
5•9+1×9+2×9=72
Răspuns:
a) (3+2+4)•10=
1.) 10•4+10•2+10•3=40+20+30=90
2.) (10•4)+(10•2)+(10•3)= 40+20+30=90
b) (5+1+2)•9=
1) 9•2+9•1+9•5=18+9+45=72
2). (9•2)+(9•1)+(9•5)=18+9+45=72
Sper ca te-am ajutat