三年级数学下册五《面积》面积单位习题北师大版.doc

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1面积单位 1. 基本技能训练3 平方米=( )平方分米900 平方分米=( )平方米5 平方分米=( )平方厘米200 平方厘米=( )平方分米6 分顷=( )平方米40000 平方米=( )公顷2. 在括号里填上适当的单位。(1)北京世界公园里目前亚洲是最大的微缩景观公园,面积约 47( )。(2)香港特区的总面积约为 1100( )。3. 教室的窗户长 25 分米,宽 20 分米,它的面积是多少?在窗户四周贴一条彩带,彩带总长是多少?4. 教室右面的墙壁,长 8 米,宽 4 米,墙上有 2 扇窗户,每扇窗户的面积是 5 平方米,现在要粉刷这面墙壁,要粉刷的面积是多少?5. 一台压路机,每分钟行驶 40 米,压路的宽度是 3 米。压路机行驶 15 分钟,能压多大面积的路面?2参考答案 1. 300 9 500 2 60000 42. 公顷 平方公里 3. 500 平方分米 90 分米4. 22 平方米5. 1800 平方米

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