用简便方法计算下面各题．
1.8×5.46+1.8×4.54 0.65×201 2.33×0.5×4
99×5.6 4.8×0.25 2.64+8.67+1.33﹣1.64．
用简便方法计算下面各题．
1.8×5.46+1.8×4.54 0.65×201 2.33×0.5×4
99×5.6 4.8×0.25 2.64+8.67+1.33﹣1.64．
是
的多少倍？
=
=
=
=
=
=
=
=
=
=
，男生人数比女生少
，女生人数是男生人数的
÷6=
×
= 40×（
﹣
）=
= 1÷
×
=
÷
=
×
= 5×
×
= 5+
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