计算
(1)2×2.77+0.23×3.2+7.6-2.05÷0.82
(2)(6.73+8.5-2.73)×0.8+3.76×0.25+25.8(3)16×3+12÷(
-
)
(4) 38.4×187-15.4×384+3.3×16
(5)
+[
+45×(
-0.6)]
(6)
÷[(
+
)×
]
(7)0.78×3.6+0.078×64+0.078-10.1×0.08
(8)(
-
+
)×7
(9)0.25×0.25×16+9.7×0.48+1.52×9.7-9.7
(10)
+3.9+
÷6.1+
÷23+
×![](http://math.21cnjy.com/mml2svg?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmfrac%3E%3Cmrow%3E%3Cmn%3E9%3C%2Fmn%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmn%3E1%3C%2Fmn%3E%3Cmn%3E7%3C%2Fmn%3E%3C%2Fmrow%3E%3C%2Fmfrac%3E%3C%2Fmath%3E)
(11)
×
+
×0.5+1.25×2.5×3.2
(12) [1-(
+
)]×24+
×(
+
)÷![](http://math.21cnjy.com/mml2svg?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmfrac%3E%3Cmrow%3E%3Cmn%3E1%3C%2Fmn%3E%3Cmn%3E9%3C%2Fmn%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmn%3E1%3C%2Fmn%3E%3Cmn%3E0%3C%2Fmn%3E%3C%2Fmrow%3E%3C%2Fmfrac%3E%3C%2Fmath%3E)
(13)
÷(
-
×
)÷7-
÷
-
(14)
÷0.375×
+2.4×
÷1.5