小明和妈妈一起来到小河边，小明看到河里有4只鸭子自由自在地游着。不一会儿，4只鸭子全部游上了岸。妈妈问：河里还剩几只鸭子？
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． ．
直接写得数．×3= 5÷=÷=×2= 100×29%= 0.625×0.4=÷=+=×（+）=×÷=
2========
=②
=③
=④
=
=⑥
=⑦
=⑧
=
=⑩1÷6÷3=
=
÷
=
×
=
﹢
=
×
=
×
=
﹣
=
÷4=
，则男生比女生少
． ．
×3= 5÷
=
÷
×2= 100×29%= 0.625×0.4=
÷
=
+
=
×（
+
÷
=
=
=
=
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=
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