用7张长2分米、宽1分米的长方形不干胶，贴在一张长7分米、宽2分米的木板上，将其盖住，共有多少种不同的拼贴方式?在这里，如果两种方案可以通过旋转而互相得到，那么就认为是同一种．
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=
直接写出得数×=×=×18=÷8= 6÷=××=÷=÷=÷÷= 0.25+=﹣=÷×=÷=×= 8﹣4÷=﹣=÷14= 12×（﹣）= 5%×5=+++= 3.75+= 63%﹣27%=（1﹣20%）÷20%= 0.4÷=×1.8=×25%=
×60= 12÷
= 3.14×42=（
）2=
×
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+
=
÷
÷
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×4=
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+
=
÷
=
=
﹣
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×
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﹣
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= 11
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= 0÷1.2=
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= 54
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×
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×
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×18=
÷8=
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×
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= 0.25+
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﹣
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= 8﹣4÷
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﹣
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÷14= 12×（
﹣
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+
+
+
=
= 63%﹣27%=（1﹣20%）÷20%= 0.4÷
=
×1.8=
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