用分数表示除法算式的商，能化成整数或带分数的要化成整数或带分数．35÷20=6÷9=22÷7=42÷3=
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口算显身手！=========
计算下面各题． 40××60 8× 27×．
用颜色涂出每种图形的．并说一说每种图形的的个数一样多吗？为什么？
请观察并计算下列各题，你发现了什么？×=×===﹣=﹣=﹣=﹣=
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×60
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．并说一说每种图形的
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×
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