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
