把下列物体分成两类，填写像一个序号
× =× =+ =1.5× =× =1．
× =3600 × =3600 × =3600 × =3600 × =3600．
× = ÷=+ =1．
小刚在计算除法时，把除数42写成24，结果得360．正确的商应该是 ．
把×=改写成两道除法算式： ， ．
× =
× =
+ =1.5× =
× =1．
× = ÷
+ =1．
×
=
改写成两道除法算式： ， ．
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