解:4×8×25×125等于( 100000 ) ∵已知需求出4×8×25×125等于多少 A × B × C × D = (A × C)× (B × D) ∴4 × 8 × 25 × 125 = (4 × 25)× (8 × 125) = 100 × 1000 = 100000 答:4×8×25×125等于100000
解:二(25X4)X(8X125)二100X1000.二100000