一年级上册数学竞赛试题
一年级竞赛试题汇总1、想一想,算一算。(1)1+3+5+7+9+11+13+15+17+19=( )。(2)7+8+9+11+12+13=( )。2、由3个一和5个十组成的数是( )。3、比79少50的数是( ),( )比36多20,28比( )少10。4、最小三位数比最大的两位数大( )。5、“○”是圆形,“□”是( )形,2分的硬币是( )形的,黑板通常是( )的,三根一样长的木棒可以围成( )形。6、我吃饭大约用了10( ),我每天的睡眠时间大约是10( )。7、今年爸比妈大2岁,3年...
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