递等式计算，写出必要的计算过程，能简便计算的用简便方法计算：
（1）0.3×（1×0.5÷1×0.5）
（2）1.25×6.4×2.5×5
（3）4.8×2.5+17.22÷2.1
（4）25.2×（0.32÷0.4）+8.6
（5）3.25×4.8+7.75×4.8﹣4.8
（6）6.4÷[（22.6﹣8.4×1.5）÷2.5]．
相关试题
递等式计算，写出必要的计算过程，能简便计算的用简便方法计算：
（1）0.3×（1×0.5÷1×0.5）
（2）1.25×6.4×2.5×5
（3）4.8×2.5+17.22÷2.1
（4）25.2×（0.32÷0.4）+8.6
（5）3.25×4.8+7.75×4.8﹣4.8
（6）6.4÷[（22.6﹣8.4×1.5）÷2.5]．
×
= 40%+50%= 81÷
= 9.9÷0.1=
= 
×2÷
= 
÷6= 
÷
= 
÷
÷
= 
×0.15= 
÷
= 4×60%=
×8= 
÷2= 
÷
= 
×
=
= 
﹣
= 
+
= 21×
=
÷9= 
÷
=
÷7= ②1÷
= ③
×8= ④
×
=
+
= ⑥
×
÷50%= ⑧36÷
=
×120= 20×
= 
×
=
×0= 
÷3= 4÷
= 
÷
×
+
= 
+
= 
=
﹣
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