5.Efectuează: a) 49 * 5+ 38 x 7 53 x 6 + 82 x 9 b) 66 x 6 + 48 x 7 58 x 9 + 31 x 9 c) 83 x 8 + 52 x 5 17 x 3 + 29 x 8

Răspuns:
a) 49×5+38×7=245+266=511
53×5+82×9=265+738=1003
b)66×6+48×7=396+336=732
58×9+31×7=522+217=739
c)83×8+52×5=654+260=914
17×3+29×8=51+232=283
Sper că team ajutat !! :))
Răspuns:
a) 49×5+38×7 = 245+266
= 511
53×6+28×9= 318+ 252
= 570
b) 66×6+48×7 = 696+336
=1032
58×9+31×9 = 522+279
= 531
c) 83×8+52×5= 664+260
=924
17×3+29×8 = 51+232
= 283
Sper sa te ajute !