口算我最棒!= = = == = = ==
口算×= ×= 12×= +3=÷= ÷4= ×= 5÷=
直接写得数= = == = =
带分数除法．（1）例：4÷1=÷= = 分数除法中有带分数的，先把带分数化成 ，然后 ．（2）试一试．16÷1 ÷1 4÷5 ÷12÷1 6÷ 1×3 2﹣．
6吨的等于1吨的．
= 
= 
= 
=
= 
= 
= 
=
=
×
×
= 12×
= 
+3=
÷
= 
÷4= 
×
= 5÷
=
= 
= 
=
= 
= 
=
÷1
=
÷
= = 
÷1
4
÷5 
÷1
÷1
6
÷
×3
2
﹣
．
等于1吨的
．
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