口算1.6÷0.4= 0.77×1= 7.5÷3= 1.5×6=0.125×8= 31.4÷3.14= 1.4×10= 0.1×6.4=3.6×0.2= 1.5÷1.5= 2.8÷0.4= 2.3+1.8=10÷0.1= 4.16÷1= 0.45×0.1= 0.2×11=3.6÷2= 1.2÷0.02= 72÷0.9= 25×0.4=
脱式计算,能简算的要简算 ①2006﹣4848÷96×2.4②31.9×18﹣8×31.9 ③+++④×[﹣(﹣)].
用简便方法计算下面各题. (1)9.14﹣1.43﹣4.57 (2)29×33﹣33×9 (3)3200÷4÷25 (4)634+78+66+122.
计算,能简算的要简算. ①36.25×101﹣36.25②﹣(﹣)+ ③36×+36×④0.75﹣+ ⑤﹣(+)⑥3+0.6+0.625+.
计算下面各题,怎样简便怎样算..
脱式计算,能简算的要简算 3.5×1.02+3.5×0.980.34×4÷8 0.65×20121.6÷0.8﹣12.9.