直接写得数+= ÷7= ×= ÷=×8= 9÷= 15×= ﹣=÷= ×= ×= ÷=
直接写出得数． 6×=×=×=×=×10=×=×=×0=
= =
涂一涂，算一算．===
列式计算． （1）12的倒数与的和是多少？ （2）一个数的倒数是，这个数的是多少？
口算．×=+=﹣=×=×0=×=×2= 24×=×=×=
+
= 
÷7= 
×
= 
÷
=
×8= 9÷
= 15×
= 
﹣
=
÷
= 
×
= 
= 
÷
=
=
×
=
×
=
=
×10=
×
=
×
=
×0=
= 
=
=
=
=
的和是多少？
，这个数的
是多少？
×
=
+
=
﹣
=
×
=
×0=
×
=
×2= 24×
=
×
=
×
=
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