0.45= %==9÷ = ÷40= 折．
直接写出下面各题的得数．﹣= 4÷= 7×= 2﹣=÷=+= 10÷= 10×= 3.14×2= 0÷3.14= 25×= 1+=÷=×=++=×=（﹣）×0= 6÷=（﹣）×30= 3.14×4=
直接写得数．×3=×0×15= 0.6÷= 2﹣﹣= （2+）÷2==（）×5=（）×12=
计算下面各题．．
×÷÷÷×÷÷．
直接写出得数．×=××=÷3= 12×=+﹣+= 20÷= 18÷÷=×= 0×=×÷×=
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=9÷ = ÷40= 折．
﹣
= 4÷
= 7×
= 2﹣
=
÷
=
+
= 10×
= 3.14×2= 0÷3.14=
= 1+
=
÷
=
×
=
+
+
=
×
=（
﹣
）×0= 6÷
=（
﹣
）×30= 3.14×4=
×3=
×0×15= 0.6÷
= 2﹣
﹣
=
）÷2
=（
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．
×
÷
÷
÷
×
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．
×
=
×
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÷3= 12×
=
+
﹣
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= 18÷
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=
= 0×
=
×
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