脱式计算.
(7.6﹣3.6÷2)×1.5
43×99+43÷[1÷(
﹣
)].
(4.5×1.1×4.8)÷(3.3×0.8×0.5)12.5×2.5×0.8×4. 6.3×+3.7÷
7÷(7﹣7×0÷7+7÷7)18×45×(+
)2.25×
﹣2.75×
+3×225%
用你喜欢的方法计算.
(1)
(2)27×3.4+15.4×34﹣340×81%
(3)
(4).
口算:﹣
=
12.5%=4÷4÷
=
×6=
37÷37%=40×5%=2×(+
)=(
﹣
)÷
=
计算下面各题,能简算的要简算.
(1)5.42﹣(3.75﹣0.58)
(2)24×(﹣
+
)
(3)÷[(
+
)×
]
(4)12×[(﹣
)×3].