递等式计算（能简便的要用简便方法计算）．
①（1÷0.5+0.5÷1）×3.2
②0.25×3.7×（3.8+0.2）
③52.8÷[18.2﹣（4.24÷0.8﹣0.3）]
④0.375×8﹣0.8+7.25×0.8．
相关试题
= ②3﹣1
= ③
=
+3.75= ⑥
﹣
= ⑦1﹣2÷7= ⑧36×（
+
×
=
×12= 0.25÷2.5%= 51.3÷0.01=
= 0.75÷0.25=
=
直接写出得数．
+
=
﹣
=
×
=
÷=
×
=
﹣0.8=
+
=
÷4=
3.5﹣2.9= 36.4÷100= 1.7×0.3= 4.8+2=
×21= 9.82﹣0.2= 0.8÷0.002= 2.5×1.7×4=
=
=
=
×
=
÷
=
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