钟面上9时整，时针和分针所夹的角是 度；6时整，时针和分针所夹的角是 度．
0.25== %= ÷16．
：32=5÷ ==0.625．
== ÷14= 保留两位小数．
=6﹕ = %=0.6．
÷ == ==．
= %= ÷16．
=0.625．
=
= ÷14= 保留两位小数．
=6﹕ = %=0.6．
= =
=
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