推算。23+2= 323+2=46-8= 246-8=52-5= 552-5=26+8= 426+8=77+6= 777+6=
10-÷×1
325×0.36+6.75×36
5.6×0.375+×5.4-0.375×0.9
5.6x+4x=17.28
x+=
-
÷
×1
×5.4-0.375×0.9
x+
=
粤公网安备 44130202000953号