口算：
29×30= 700÷20= 240×30=
960÷60= 810÷90= 240÷80=
30×80= 340÷17= 15×20=
220÷11= 600÷12= 50×15=
520÷26= 520÷20= 31×20=
640÷80= 840÷42= 630÷90=
640÷40= 900÷18=
相关试题
口算：
29×30= 700÷20= 240×30=
960÷60= 810÷90= 240÷80=
30×80= 340÷17= 15×20=
220÷11= 600÷12= 50×15=
520÷26= 520÷20= 31×20=
640÷80= 840÷42= 630÷90=
640÷40= 900÷18=
=
=
=
=
=
=
=
=
=（2）0.6÷
=（3）75×10%=
+
×4=（5）48×（
﹣
）=．
=
=
=
=
= 1﹣
=
= 1÷0.25%=
=
=
= 1
= 2.3÷0.3=
+
=
+
= 2.4×0.5= 0.9÷0.03=
=
÷
=
×
= 0.4×0.12=
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