怎样简便就怎样算.
2.5×32×12.5 8×5×(﹣
) 4.63+3
+5.37+7
×[(
﹣
)÷
] 17×
﹣
1.25×(
)
0.8+4+
+5
2.05﹣0.81÷2.7×4.5 10.625×2005+2005×
﹣2005
÷(1
﹣
×
)+
8
÷[4.6+1
×(4
﹣1.15)] 9.8﹣(
+2.4×2
)