五年级数学下册3.1《分数乘法(一)》练习题(无答案)北师大版.doc

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1分数乘法(一) 1. 7表示 ;还可以表示: 。 5148 表示 ;还可以表示: 。 672. + + =( )( )=( );310310310+ + + =( )( )=( )7207207207203.计算。6 8 12 144213 213 14 5165713 518 17 8 444.涂一涂,再列式计算。(1)3 个 是多少?29列式: (2)5 个 16的和是多少?列式: 5.单位换算平方米( )平方分米 日( )时 时( )分25 13 56t=( )kg dm=( )cm320 7106.解答下列应用题。(1)小明每分钟步行 千米,10 分钟可步行多少千米?1 小时呢? 1202(2)一个等边三角形的一条边长 米,它的周长是多少米?29(3)一个正方形的边长是 分米,它的周长是多少分米?928(4)一个鸡蛋重 千克,60 个鸡蛋共重多少千克?536

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