下面是4名体院学生50米自由泳成绩统计表．把前三名的名字写在领奖台上． 姓名 许薇 刘娟 李菲 王小芳成绩/秒 55.83 54.49 48.50 55.67•
直接写得数． 12×= 6÷=÷= 1÷×=×18=×0×=×=×26=
直接写出得数．×60= 12÷= 3.14×42=（）2=×=+=÷=÷=
直接写得数．×4=+=+=÷= 25÷=﹣=÷5=×= 2÷=﹣=×12= 2﹣﹣=
口算========
直接写出得数．== 11=== 0÷1.2======= 12=== 54=
= 6÷
=
÷
= 1÷
×
=
×18=
×0×
=
×
=
×26=
×60= 12÷
= 3.14×42=（
）2=
×
=
+
=
÷
÷
=
×4=
+
=
+
=
÷
=
=
﹣
=
×
=
=
﹣
=
=
=
=
=
=
=
=
=
=
=
= 11
=
=
= 0÷1.2=
=
=
=
=
=
=
=
=
= 54
=
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