用竖式计算，带★的验算①3.48×0.05= ②3.06×45= ③★8.45÷0.65=④0.9×1.07= ⑤6.21÷0.03= ⑥★19.76÷5.2=
直接写出得数．= = == = 1﹣=
．
25×8=8.5﹣3.7=0.56÷0.07=4×9.2×0.25======
直接写出结果．12÷0.4= 9.9×50= 2+0.75= +=3+= 0.5×40= 2﹣= ﹣=
= 
= 
=
= 
= 1﹣
=
．
=
=
=
=
=
+0.75= 
=
= 0.5×40= 2﹣
= 
﹣
=
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