小巧体重29千克,比小胖轻9千克,小胖重多少千克?
用简便方法计算下面各题.(0.86+0.86+0.86+0.86)×25 4÷1+6×125÷(50÷8) 7.6×÷[1.9﹣1.9×(1.9﹣1.9)].
下列各题,怎样算简便就怎样算.(1)4.85×0.17+0.485×8.3 (2)+×99+(3)2008× (4)2﹣2.86×(6.25﹣6)
下面各题,怎样简便就怎样算.19.98×37﹣199.8×1.9+1998×0.82 9999×7+1111×37 231÷231 (70+)×.
计算下面各题,怎么简便就怎样算①9﹣(3+0.4) ②1.8×+2.2×25%③(8﹣10.5×)÷4 ④2÷[5﹣4.5×(20%+)].
计算下面各题,怎样简便就怎样算.33.02﹣(148.4﹣90.85)÷2.5 4×0.6+0.6÷(1÷+÷1)÷5.1 18.1+(3﹣0.299÷0.23)×1.