批发市场．小红：一件上衣批发价每件46元，10000元钱买240件够吗？小芳：如果每件衣服卖55元，245件能卖多少元？
直接写得数．+= ﹣= 0.2﹣=+= ﹣= +2÷9=2﹣﹣= 1.55﹣= 1﹣﹣+=0.5﹣﹣=
计算．= = == = 1﹣== =
看图计算下面各题．+= +=
计算下列各题：= = == = == =
观察下面各式，算一算，你能发现什么规律？+= += +=×= ×= ×=
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﹣
= 0.2﹣
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﹣
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+2÷9=
﹣
= 1.55﹣
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= 1﹣
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= 
=
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= 
=
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+
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×
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×
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×
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