7.8×1.067.8 6.4÷0.016.4×100 24×0.524÷0.5
0.48÷0.04= 0.24×2= 16÷0.4= 0.6×0.7=
3.6÷6= 18×0.5= 2.7÷3= 43.6×0.6÷43.6×0.6=
等量关系:
方程: