依题意列式为50.6x(3.4+6.7)=50.6x10.1=511.06
50.6×3.4+6.7=178.74 和:178.7450.6×3.4×6.7=1152.668 积:1152.668
4乘6的积是多少?如向正确列式计算?列式计算4×6=24,