小学数学竞赛选拔赛初赛试题
第一试(考试时间60分钟)
县市国民小学年级准考证编号:姓名:
计算题(只需写出答案,每题5分,共100分)
0.1255.57165=
1+11+111+1111+11111+111111+1111111+11111111+111111111+1111111111
=
(1+0.37+0.64)(0.37+0.64+1.25)-(1+0.37+0.64+1.25)(0.37+0.64)
=
35.77.3+137.25+4820.27=
371999125168=
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56789+67895+78956+89567+95678=
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=
91.3+88.8+90.2+270.4+89.8+186.8+91.7=
6.258.3716+3.750.8378=
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