14×5=(10×5) +(4×5)=50+20=70
16×4=(10×4)+(6×4)=40+24=64
19×9=(10×9)+(9×9)=90+81=171
13×6=(10×6)+(3×6)=60+18=78
34×8=(10×8)+(4×8)=80+32=112
68×5=(10×5)+(8×5)=50+40=90
72×3=(10×3)+(2×3)=30+6=36
28×2=(10×2)+(8×2)=20+16=36
75×9=(10×9)+(5×9)=90+45=135
Sper că te-am ajutat !
