【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《小学数学竞赛选拔赛初赛试题》,欢迎阅读!
小学数学竞赛选拔赛初赛试题
第 一 试(考试时间60分钟)
计算题(只需写出答案,每题5分,共100分)
1. 0.1255.57165=
2. 1+11+111+1111+11111+111111+1111111+11111111+111111111+1111111111
=
3. (1+0.37+0.64)(0.37+0.64+1.25) - (1+0.37+0.64+1.25)(0.37+0.64)
=
4. 35.77.3+137.25+4820.27= 5. 371999125168= 6. 84
1813
19.375107= 19198
7. 123456789101112979899100101
=
8. 56789+67895+78956+89567+95678=
9.
227(1)3312=
2
(0.25)16
7
232
10. [14.8(31.5)1]8=
7255
1
11. 1.44770.0003119.816102.5361.14= 12. 91.3+88.8+90.2+270.4+89.8+186.8+91.7= 13. 6.258.3716+3.750.8378=
41
0.271.252
5814. =
11
18.2553
25
15. 199920002000200120012001200119991999200020002000
=
1111
16. 2000(1)(1)(1)(1)=
234100
11111111
17. (1)(1)(1)(1)(1)(1)(1)(1)
22339999100100
=
1232467142191827
18. =
13526107213592745
19. 23.4246.840.53781.250.537846.840.75846.840.1250.5378
= 20. (1
19191919
)(12)(13)(115)= 92929292
2
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