口算下列各题．
72×60= 250×40= 73×20= 75×40=
81×50= 15×4= 43×200= 75×500=
600×50= 70×40= 92×50= 30×14=
59×42≈ 32×61≈ 993×19≈ 701×289≈
相关试题
口算下列各题．
72×60= 250×40= 73×20= 75×40=
81×50= 15×4= 43×200= 75×500=
600×50= 70×40= 92×50= 30×14=
59×42≈ 32×61≈ 993×19≈ 701×289≈
=
=
= 6.3×10%=
= 7×
=
= 40%﹣0.25=
=
+
÷4=
×
÷
×
= 3÷
﹣
÷0.8%= 0.705+3.35= 1.5×（
）= 0.375×0.375=
×
= ；
×
×
= ；
﹣
= ； 10÷10%= ；
×8×
= ；
×
÷
×
= ；
﹣
= ； 3.6÷
= ．
×4= 624×50%= 0.5÷
= 5﹣1.42=
+
= 0.125+
= 1﹣
﹣
=
÷
=
﹣
）÷
= 8﹣8÷4﹣
=
24
÷6
4
×
×
×
．
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