脱式计算
32×0.16×2.5×1.25
6.4×4.2﹣4.2×
(0.3+)×1.6﹣
9÷[1﹣(+
)].
计算下面各题,能简便的要简便计算.
16.2﹣4.65+5.356000÷12513.7﹣6.38+6.3﹣4.32
(45+405÷27)×120 125×250×32333×444+666×778.
简便运算.
(1)0.54×40.5﹣0.44×40.5=
(2)1.4×2.5×40= .
计算.
①7.5×1.8÷0.15 ②12.4÷0.8﹣9.64 ③7.65×2.4+1.64
④12.3﹣10.8÷4.5 ⑤44.28÷4.1÷0.9+2.5 ⑥39.87×4.58﹣29.87×4.58.
计算下面各题.(能简算的用简便算法)
①12.36﹣6.49﹣3.51
②8.5×3.8+8.5×6.2
③0.2÷2.5×(4.2﹣1.075)
④[3.2﹣3.2×(30.4﹣29.85)]÷1.8.