你能直接写出下面各题的得数吗?
10×10= 13×20= 12.6+4.2= 22.7﹣6= 0×60=
45×20= 50×40= 20×16= 320×2= 124÷4=
8.5﹣0.3= 22×3= 3.5﹣0.8= 13×40= 78﹣69=
=
= 1﹣
=
+0=
脱式计算:(能用简便方法就用简便方法)
15.64﹣2.53﹣7.47;
3.7+6.3÷0.6﹣0.4;
3.5÷〔(0.45﹣0.38)×0.1〕;
5.6×7.2+4.4×7.2.
下列各题怎样简便就怎样算.
3.7×1.4×0.0572×0.81+10.41.4×25+3.45
1.5×1021.25×0.7×0.82.7×3.7+0.37×73
8.7×990.8×(12.5﹣1.25)1.25×0.4×80×2.5.
怎样算简便就怎样计算.
(1)2.8+[2.4÷(90﹣60)]
(2)0.4×7+
×3﹣0.4×3
(3)0.125×0.25×32
(4)
×
+
×
.
能简算则简算.
2.5×6.6×0.4(9.87+9.87+9.87+9.87)×2516.7×0.4+15.5
1.96×0.57+1.96×0.436.75+23.4÷7.20.65×201.
脱式计算(能简算的要简算)
2.4×1.5+3.6×1.50.125×2.5×87.38﹣5.14+3.62﹣2.86
17.2﹣7.2×0.68.9×9.941.9﹣2.08﹣7.92.