口算．
= 
= 
= 2.25+
=
= 2.5×0.1= 7.5÷0.5= 
=
20.1+9.09= 
×
= 
﹣
= 1÷0.1﹣1×0.1=
（
+
）×63= 0.5÷
= 0.4÷40%= 0.42﹣0.32=
相关试题
口算．= = = 2.25+== 2.5×0.1= 7.5÷0.5= =
20.1+9.09= ×= ﹣= 1÷0.1﹣1×0.1=
（+）×63= 0.5÷= 0.4÷40%= 0.42﹣0.32=
×
）×（12×17）
=
=0.32=
=
﹣
=
×8=
﹣
﹣
=
+
+
1.25×8.82.5×37+6.3×25．
×
×65+
③
．
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