二年级数学下册七《时分秒》1分有多长同步练习2北师大版.doc

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11 分有多长 一、画出下面钟面上缺少的分针。4:20 19:48 1:0515:54 6:00 23:27二、填空:(1)钟面上有( )个大格,每一大格有( )个小格。时针走一大格是 1( ) ,分针走一大格是( )分钟,秒针走一大格是( )秒。(2)1 时=( )分 1 分=( )秒三、填写合适的单位。1)小明大约每天睡9( ) 2)小明穿衣服大约需要20( ) 3)烧一壶水大约要15( ) 4)小华跑50米用了9( ) ; 5)爸爸每天工作8( ) 。 6)播放一集动画片约用20( ) 7)一部电影放映了2( )10( ) 8)跳绳20下要用15( )9)做一次深呼吸用 24( ) 10)小华跑 200 米用 45( ) 2参考答案:一、略二、填空:(1) (13 ) ( 5 ) ( 时 ) (5) (5 )(2)1 时=( 60 )分 1 分=( 60 )秒三、填写合适的单位。1) ( 时 ) 2) ( 分 ) 3) ( 分 ) 4) ( 秒 ) 5) ( 时 ) 6) ( 分 ) 7) 2( 时 )10( 分 ) 8) ( 秒 )9) ( 秒 ) 10) ( 秒 ) 3

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