计算.(能简算得要简算)
3.4÷[(1.25+0.45)×23]

.
脱式计算:
0.75÷0.25+
×
(8.6×0.5﹣
)÷12
÷[
﹣(
+
)]
[800×(1+25%)﹣360×1.5]÷25%15﹣[
+(2.5﹣
)]÷0.125.
脱式计算:
(2808÷26﹣10.8)×2.5 9×0.125×12﹣9×0.125×4
(
﹣
)÷(
÷
)
×
÷[1﹣(
+
)].
直接写出得数
3500﹣700=0.4×0.2=9﹣0.9=24÷
=204÷2=
+
=3.2﹣2
=2
+
=1÷
×1÷
=0.9+99×0.9=
(1)
+3.52+
+48%(2)
×
+
(3)
÷(5﹣3.9×
)
(4)25﹣25×
(5)1000÷32÷0.25÷0.125(6)38
﹣15.38+61.25﹣4.62.