直接写出得数．
270÷30= 480÷80= 320÷40= 630÷70=
80÷20= 160÷40= 350÷70= 560÷80=
142÷20≈ 643÷80≈ 350÷49≈ 160÷38≈
812÷90≈ 423÷70≈ 270÷28≈ 320÷79≈
相关试题
÷10=
×
= 1÷
= 8×
=
=
÷
=
×
÷
=直接写得数．
4×30%=
﹣
= 44÷
= 0.45÷5=
10﹣0.57﹣0.43=
×
÷×
=
﹣×= 0.68++0.32=
8.37×2.4÷1.9×0= 1÷5+
=
=
=
×30=
÷5= 2÷
=
=
×4= 0.4÷
= 0×1
=
= 5﹣
= 4÷
=
=
+
= 20×
= 0.36÷0.6=
﹣
= 
÷2=
÷
= 7×（
+
）=
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