1、1 3-2 -3 61234 5 -6 7 8 9 10 -11 1. 2. -1-2-3456-789101112 -13 -3. excel sum , round, mod,introundupsumpriduct vlookuphlookupindexindexcolumnrowoffsettext , mid , len , left , right , find , substtute rank , countif , frequencyyear , month , day ,now , today , networdays , eomonth , workday , time ,
2、 datedif-if , not , oriserror dsum4. =365-104=25111 =25112=21.75=821.753=-=-5. -+6. - (-1-,61.7. -11-2-513456-8. 9. 2 10. -,-20071111550020082008111200812000200960002009615-11. - (): 1. 2.3.4.5.6.7.8.9.1012-3-456712345678123455s?1234567812380%20%20%20%4 550%50% 5w(why-what-who-when-)how- .79306123930104101105106107 xxxxx-12-34-5-*1;2;3;4;51-,-20071111550020082008111200812000200960002009615-22008101310