巧算:(10-7/55*1)+(9-7/55*2)+(8-7/55*3)……(1-7/55*10
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巧算:(10-7/55*1)+(9-7/55*2)+(8-7/55*3)……(1-7/55*10巧算:(10-7/55*1)+(9-7/55*2)+(8-7/55*3)……(1-7/55*10巧算:(
巧算:(10-7/55*1)+(9-7/55*2)+(8-7/55*3)……(1-7/55*10
巧算:(10-7/55*1)+(9-7/55*2)+(8-7/55*3)……(1-7/55*10
巧算:(10-7/55*1)+(9-7/55*2)+(8-7/55*3)……(1-7/55*10
45
巧算:(10-7/55*1)+(9-7/55*2)+(8-7/55*3)+.+(1-7/55*10)
巧算:(10-7/55*1)+(9-7/55*2)+(8-7/55*3)……(1-7/55*10
巧算( 10- 乘1)+ (9-55分之7 乘3) 加(8-55分之7乘10)
1.找规律,巧计算.(1-1/3)x(1-1/4)x(1-1/5)x……x(1-1/2009)x2009===解题思路:2.巧算.(10-7/55x1)+(9-7/55x2)+(8-7/55x3)+……+(1-7/55x10)==解题思路:
计算:1*4+2*7+3*10+4*13+.+9*28+10*31(巧算)谢谢!
(10-7/55×1)+(9-7/55×1)+(8-7/55×1)+.+(1-7/55×1)怎么简算?
(10-7/55×1)+(9-7/55×1)+(8-7/55×1)+.+(1-7/55×1)怎么简算?对不起,我打错了 应该是:(10-7/55×1)+(9-7/55×2)+(8-7/55×3)+......+(1-7/55×10)怎么简算?
简便计算,(10-7/55*1)+(9-7/55*2)+(8-7/55*3)+...+(1-7/55*10)
10 减55分之7乘1的差加9 减 55分之7乘2的差(10-7/55*1)+(9-7/55*2)+(8-7/55*3)+……+(1-7/55*10)
怎样简便计算 (10-7/55*1)+(9-7/55*2)+(8-7/55*3)+······+(1-7/55*10)
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