用递等式:1+2+3+4+5+.+25.2+4+6+8+.40 5+15+25+35+.9540+39-38-37+36+35-34-33+.+4+3-2-1103+99+102+98+97+96+105+104+101+99+97+102+106+99+9766(100个).*66(99个)*668的积是?248*697+248*301+4961234*90909+1234*909019981998*1999-1998*199919991
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 20:52:15
![用递等式:1+2+3+4+5+.+25.2+4+6+8+.40 5+15+25+35+.9540+39-38-37+36+35-34-33+.+4+3-2-1103+99+102+98+97+96+105+104+101+99+97+102+106+99+9766(100个).*66(99个)*668的积是?248*697+248*301+4961234*90909+1234*909019981998*1999-1998*199919991](/uploads/image/z/2666864-56-4.jpg?t=%E7%94%A8%E9%80%92%E7%AD%89%E5%BC%8F%EF%BC%9A1%2B2%2B3%2B4%2B5%2B.%2B25.2%2B4%2B6%2B8%2B.40+5%2B15%2B25%2B35%2B.9540%2B39-38-37%2B36%2B35-34-33%2B.%2B4%2B3-2-1103%2B99%2B102%2B98%2B97%2B96%2B105%2B104%2B101%2B99%2B97%2B102%2B106%2B99%2B9766%EF%BC%88100%E4%B8%AA%EF%BC%89.%2A66%EF%BC%8899%E4%B8%AA%EF%BC%89%2A668%E7%9A%84%E7%A7%AF%E6%98%AF%3F248%2A697%2B248%2A301%2B4961234%2A90909%2B1234%2A909019981998%2A1999-1998%2A199919991)
用递等式:1+2+3+4+5+.+25.2+4+6+8+.40 5+15+25+35+.9540+39-38-37+36+35-34-33+.+4+3-2-1103+99+102+98+97+96+105+104+101+99+97+102+106+99+9766(100个).*66(99个)*668的积是?248*697+248*301+4961234*90909+1234*909019981998*1999-1998*199919991
用递等式:1+2+3+4+5+.+25.2+4+6+8+.40 5+15+25+35+.95
40+39-38-37+36+35-34-33+.+4+3-2-1
103+99+102+98+97+96+105+104+101+99+97+102+106+99+97
66(100个).*66(99个)*668的积是?
248*697+248*301+496
1234*90909+1234*9090
19981998*1999-1998*19991999
111111111*111111111
用酬劳费的好的20很好的40
能简便的简便,用简便方法!
用递等式:1+2+3+4+5+.+25.2+4+6+8+.40 5+15+25+35+.9540+39-38-37+36+35-34-33+.+4+3-2-1103+99+102+98+97+96+105+104+101+99+97+102+106+99+9766(100个).*66(99个)*668的积是?248*697+248*301+4961234*90909+1234*909019981998*1999-1998*199919991
56ytry5r655555
I don‘t anow ...........................................................................................................................................................谢谢..................