口算：
2700÷9= 12×30= 900÷9= 12×300=
0÷8= 11×70= 40×50= 99×0=
6.2+3.9= 8.4﹣7.5= 2.1﹣1.5= 5.8+2.2=
相关试题
口算：
2700÷9= 12×30= 900÷9= 12×300=
0÷8= 11×70= 40×50= 99×0=
6.2+3.9= 8.4﹣7.5= 2.1﹣1.5= 5.8+2.2=
= 1÷
= 
= 
×0.3=
= 
+
= 
=
= 18
=
×
= 
×8= 6×
= 27﹣
= 22÷
= 
×
=
= 
+
= 1﹣
= 
﹣
= 16×
= 
÷
= 1÷
= 
÷
= 
+
=
= 
×
= 
= 6×
=
×4= 
×
= 
+
= 
×
×
=
÷
= 0÷
×
= 0×10= 
×
=
+
= 
﹣
= 0÷
= 
÷
= 
×4=
1= 
= 
﹣
= 1÷（
﹣
）= 4÷
×4=
= 16×50%= 16÷
= 
= 
÷3=
= 4÷1%= 2+1÷
= 7+
= 1÷
=
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