（1）图1钟面是 时整，时针和分针所成的角是 度．（2）图2钟面是 时整，时针和分针成 角．
==8÷2==36÷ ．
==18÷ =．
÷40==0.375=9÷ =．
÷5== （填小数）=15÷ ．
8÷ ==0.125= %．
=
=8÷2=
=36÷ ．
=
=18÷ =
．
=0.375=9÷ =
．
= （填小数）=15÷ ．
=0.125= %．
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