脱式计算306×3×4 900﹣25×5 （620+180）×8 72×5÷4．
直接计算======
除以真分数，商一定小于被除数． ．
直接写出得数． ①=②=③=④= ⑤=⑥=⑦=⑧= ⑨=⑩1÷6÷3=
直接写出结果： 10÷=÷=×=﹢=×=×=﹣=÷4=
女生人数比男生人数多，则男生比女生少． ．
=
=
=
=
=
=
=②
=③
=④
=
=⑥
=⑦
=⑧
=
=⑩1÷6÷3=
=
÷
=
×
=
﹢
=
×
=
×
=
﹣
=
÷4=
，则男生比女生少
． ．
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