直接写得数．
50×60= 300÷6= 137﹣19= 309÷3=
280÷7= 0÷60= 20×50= 55÷5=
24×30= 78×99≈ 440÷9≈ 359÷6≈
相关试题
÷2= 1﹣40%=
﹣
= 0÷
= 1﹣25%﹣70%=
÷6=
﹣
=
×
=
÷
=
+
=
﹣
=
+
×5=
=
=（
+
）×56=直接写出得数．
0.78+0.22=
=
= 0÷
=
3+5%+17%=
= 0.43+0.17+0.39= 8.4+
=
0.1÷0.01= 1.2×
= 32×2.5=
=
742﹣299= 101×9.2﹣9.2=
=
=
÷
=
+0.79= ⑥（
﹣0.4）×123= ⑦
×
= ⑧
×4÷4=
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