乘法分配律:a×c+b×c=(a+b)×c125x24+125x76=125×(24+76)=125×100=12500
125x24+125x76=125×4×6+125×4×19=500(6+19)=500×25=12500
125x24十125x76=125x(24十76)=12500。
125乘(24+76)=12500
125×(24+76)=125×100=12500