计算。2l;y5]
(1)315÷3×402l;y5]
算式:提示,N2F+h+f4N2l;y5]
=*])t'h+{;p,u,z/j/_2l;y5]
(2)225×4×6+6002l;y5]
(1
算式:提示1c0K-v.o4H,v4G;X'F.Y2l;y5]
=6s'G-J4r2H']'|2l;y5]