直接写出得数.0.25×4= 5.6÷8= 50×0.6=0.33÷33= 4×2.8×2.5= 0.1+0.1÷0.1=(2.3﹣2.3)×3.5= 2.1×50÷10= 2.5×4÷2.5×4=
计算下面各题. 15.6×0.8+6.12÷3.49.4×[6.2÷(7﹣6.8)] 0.48×4.2+5.8×0.48[0.45×(4.5+3.7)]÷1.2.
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.