用一块长2米、宽1.5米的木块做圆桌面，这块桌面最大有多少平方米？剩下的木块面积约是圆桌面的几分之几？（圆桌面的面积保留整数）
直接写得数．===== 75%÷25%===
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直接写出得数．+0.2=+﹣0.2= 5÷=×1.5+3= 3.6×=×1.5=﹣= 1﹣137.5%=
直接写得数﹣=÷9= 1﹣=×=÷=÷=+=×=+=÷=﹣=×=
直接写出得数．+=﹣=×2=×=×=÷4=÷= 12×=÷42=×=×14=÷4=
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+0.2=
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= 1﹣137.5%=
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÷9= 1﹣
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×2=
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÷42=
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×14=
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