Răspuns :
Răspuns:
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
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14x5=(10x5)+(4x5)=50+20=70
16x4=(10x4)+(6x4)=40+28=68
19x9=(10x9)+(9x9)=90+81=171
16x4=(10x4)+(6x4)=40+28=68
19x9=(10x9)+(9x9)=90+81=171