589+2= 202-6= 763+8=503-4= 494+6= 225-6=
x-x=18.7
15.8-(6+÷12.5%)
10-÷×1
325×0.36+6.75×36
5.6×0.375+×5.4-0.375×0.9
x=18.7
+
÷12.5%)
-
÷
×1
×5.4-0.375×0.9
粤公网安备 44130202000953号