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2??????3????????5????????6????????
?1??????????????????????
?2?????????????????????????????????
?3??????????????????????????
3?????????????10????????????????????
4?????????????5??????2??????15??????4?????????????????????????????
5?24?????????192???????36????????????
6????????552?????????345????????????????????
7?????1944?????54?12???????18??????????????????????
1?[??]10/(6-5)=10(??)
???10??????
2[??]?1?3+5+6=14???????
?2?3*5*6=90???
?3?3*5+3*6+5*6=63???
3????9+8+7+6+5+4+3+2+1=45
4?????????2???????15??????????????8?????5??????2?????????????2????????????6?????2+15+2+6=25???? 5????????192/24=8????
????8*36=288????
?????192/24*36=288???
6????552-345=207???
345/5=69??/??
207/69=3?????------
7????1944/54/12=3?/??*??
54+18=72???
12/2=6???
3*72*6=1296???
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??_________ ??__________
???90???????150??????????? ?????????10???60?? ?????? 454?999999?545
? 999?998?997?996?1000?1004?1003?1002?1001
2?????????.
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4???????????????24???????
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5?????????????????????????????????????_____________???
6??????????????????12????11??????14????9?????______????______??
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1???????????????????????????????????????????????????????????????????????
2???????????????5???????????1???????????2?5?????????5?5????????????___________???????
3??????????????????4???27?????????????????????????12???????????13?????????7???_____________??
4?????????????????????????????????????A?B?C?D?E?F?G=_____________?
+
A B C D
E F G 2 0 0 7
+
D C B A
G F E 9 3 8 7
5? ???????????????4????????????2?.?????????????
6? ???????????????6??9??????3??5?????86???????????
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??________ ??__________
???90???????120??????30??????????? ??????(??8???80?)
1? ?1~9?9????????+?-????????????? 1 2 3 4 5 6 7 8 9=100
2? ??????????????1020????????????????????15????????????________????
3? ????????????????8?????????????????__________?????
4??????????50?????????????18?????????21??????????????17???????????? ____??
5? 2?4?6?8?...98?49??????___________?
6?????200????1???????????________??
7???????????????1?1?1???2?4?8???3?9?27?......?12???????????6???????????___________?
8???????2000?????????????????????2000??????????????????2001?????2000??????? ? 9????????????????87?????????????3???4???????2?????? ???? ???? ??
10??7?????90????????????3?????????????????????????1? ???????????? ?????
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1?????10????9??????????????
???????????????????????????????????????????????????????????? 2????????1+3=4=221+3+5=9=331+3+5+7=16=44
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???1+3+5+??+2005= ? ?????????10???20??
1923??4??????????????????
250??????40??????????2??????????????????????
?????????10???30??
1???????????????????????1??????4????1?30????????????30?????????????????????
2????8??????6???2??????6???1????????????18???118???20???????????????????????????
3?????10000????????????5?????????????????????????????5000???????
????????????????100?,?????????,????????(????)
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?????????1?9990009000 2?10 18
3????????????? 4??? 5?12??2-1?1? 6?10? 131? ??????1?44???
2?8????2.5+6?0.5 ??2.5+??0.5 ??2.5+3?1
5?1+1?0.5 4?1+3?0.5 3?1+5?0.5 2?1+7?0.5 1?1+9?0.5?
3?????????????? 4?36 5?10 6?63
?????????1?1 2 - 3- 4+ 5- 6+7+8 9=100????? 2?138 3?8 4?6 5?2450 6?32 7?1626 8?2001 9?11 37 39 10?17
??????1?6????? 2?10031003
??????1??92+4?4=24? 2434?68---? 2????130?
???300????????????????
???????????????
1.????100????????10??1???????????? ???10010?10?????10+1?11??
12?????????????????3???????????? 3?12?1??33??
??200??????????10????????????? 20010?20??20?1?19??
4.????????????10??????????13???????? ??????13??10?13?1??120??12060?2??
5.?????????????1??1????????20???????????
2011?20?
6.???????????250????????????????30??????????????
30?250?1??7470??
7.???????????20????????????????50??????????40?????????????????????
[(40+50) 2+20] 2=400(?)????????400??
8.????????????????????????????1??????????????
122?4??
9.???????????????????????10???????????????10?????25????????????????? ?25+10?2?70???70+10?2?160?????????25+10?2+10?2?160?
10.???????????????????16????16???????????4???
1622?4?????16-1-1?14???
11.??????????????????30??????????????????????180????????80?????????????? 180+80?260?????2602-30?490?????4902?980?????
12.??????????200??????????????3??16?????????????????
??????200+16??3+1?=54??????543-16=146????
13.?????????185?????????????
????185-5??2+1?=60????
???602+5=125????
14.????????????94?????2????5???2????19???????????????
????????????2???????????942=188???????5??????19????????????188-5-19=164??????????????????????????????????????????????????????164?1+1+2?=41????????????41??????????41+5?2=23????????????41+19?2=30????
15.???????????????????????1?????????2???????1???????????????????????
??????12=2???????????1???????????2+12=4??????????4?2-1?=4??????????4+1=5??????????5+2=7????
16.????????13?????8????????10????6????????4????????????1?????1????????? 846=12??8?????12???????????1?????10100?13+12?=40????1?????4064=60?????1????4??1????6??
17.??????????????. 75?3?74?3?73?3??????? ???72?3?
18??????????????. 1?4?5?4?9?4???????
???????1?5?9?????????4??????4?????13?4
19.??????????????. 3?2?6?2?12?2??????? 24?2?
20.??????????????. 76?2?75?3?74?4??????? ????????????????73?5?
21.??????????????. 2?3?4?5?8?7??????? ????????????????16?9?
22.??????????????. 3?6?8?16?18???????
???6?32?16?82??????????????2???8?6?2?18?16?2????????????????????2.?????36?38?
23.??????????????. 1?6?7?12?13?18?19??????? ????????????????24?25?
24.??????????????. 1?4?3?8?5?12?7????
??????????1?3?5?7??????????2????????4?8?12??????????4??????16?
25.??????????????. 0?1?3?8?21?55??????? ???144?377?
26.A?B?C?D???????????4????D???????????B?C????C??????B????????????
???D?????????B?C???????2??A??1??C?????B????B??3??C??4??
27.????????4??????????????3????????????????3????????????????????????? ???433=36???????????36???????
28.????????????????????????????????????????????????????????????????????????????????????????????????
???????????????????????????????????????????????????????
29.?????????????????????????????????3????5?????210??4????10?????380????????????????????
???4????10?????380????2????5?????3802=190?????3????5?????210????1????210-190=20????1????190-202?5=30????
30.???????????????????????????????????????????????? ????????? ?????????? ???????????
???????????????????????????????????????????????????????????????????????????????????????????????????
31.???8????3???????????????????????2????????????????????
???8+3?2=22????
32.?? ?18+19+20+21+22+23
??=?18+23?62=123
33.?? ?100+102+104+106+108+110+112+114
??=(100+114) 82=856
34.995+996+997+998+999
??=(995+999) 52=4985
35.??1999+1997+1995++13+11?-?12+14+16++1996+1998? ???????????1999-11?2+1=995?????
=(1999-1998)+(1997-1996)++?13-12?+11=1994+11=1005
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发表于 2019-9-13 23:46:11