共有几条鱼?列式:____________
用简便方法计算
①7350÷25
②54×101
③227+364+146+173
④5604﹣(723+1604)
0.279×258+0.742×279
13÷28+11÷27+15÷28+38÷27.
用简便方法计算下面各题.
573﹣298194+501627﹣(427+189)
630÷14125×25×32210÷6÷5.
怎样简便就怎样计算.
(+
)×24×153.7×
+5.3×0.75+
.
9.9+99.9+999.96.8÷4﹣1.2×25%+4×0.25.
0.34×12.5+0.125×66=103×0.3=4.34÷0.25÷4=
130130÷11111×66666=40.5×1.1﹣4.05=100﹣98+96﹣94…+4﹣2=