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calculati 
1,28*(1,25/10)=


Răspuns :

1,28 × ( 1,25 / 10 ) = 1,28 × 0,125 = 0,16


sau


128 / 100 × ( 125 / 100 ) / 10 = (128 / 100) × (125 / 100 ) × 1 / 10 =


= ( 32 / 25 ) × ( 5 / 4 ) × 1 / 10 ; → 128 / 100 am simplificat cu 4, 125 / 100 cu 25


= 8 / 5 × 1 / 10 = 4 / 25 = 0,16

1,28 · (1,25/10) =


= 1,28 · 0.125


= 0,16