直接写得数.
56+2.4= 1﹣0.48= 0.81÷3=
0.5×2.4= 4×0.24+0.24= 5﹣5=
3.2÷0.4= 0.05×20= 8.2÷0.01=
6.8﹣1.3﹣2.7= .
用简便方法计算.
(1)19.4﹣1.28﹣3.72
(2)1.25×0.25×32
(3)31.7×0.9+3.17
(4)2.5×4.6+0.25×46.
简便计算.
376+28+172+124164﹣83﹣17125×56
43000÷8÷12596×27+27×4.
用简便方法计算
273﹣187﹣132000÷125÷899×38+38 88×125 404×25.
简便运算.
9.8×0.53+9.8×0.4770.8﹣1.25﹣1.75
0.25×13.1×0.4 7.4×1.43+7.4×9.57﹣7.4.
下面各题怎样算简便就怎样算.÷0.6×
÷9+
×
2﹣
÷
﹣
(15﹣14×)×
87×
÷[(
+
)×
].