(10-3/55×1)+(9-3/55×2)+(8-3/55×3)+……+(2-3/55×9)+(1-3/55×10)=
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/23 00:46:02
(10-3/55×1)+(9-3/55×2)+(8-3/55×3)+……+(2-3/55×9)+(1-3/55×10)=?
(10-3/55×1)+(9-3/55×2)+(8-3/55×3)+……+(2-3/55×9)+(1-3/55×10)=?
(10-3/55×1)+(9-3/55×2)+(8-3/55×3)+……+(2-3/55×9)+(1-3/55×10)=?
![(10-3/55×1)+(9-3/55×2)+(8-3/55×3)+……+(2-3/55×9)+(1-3/55×10)=](/uploads/image/z/8382945-57-5.jpg?t=%2810-3%2F55%C3%971%29%2B%289-3%2F55%C3%972%29%2B%288-3%2F55%C3%973%29%2B%E2%80%A6%E2%80%A6%2B%282-3%2F55%C3%979%29%2B%281-3%2F55%C3%9710%29%3D)
原式=10+9+8.+1-3/55×(1+2+3.+10)
=55-3/55×55
=55-3
=52
=55-3/55×55
=55-3
=52
(10-3/55×1)+(9-3/55×2)+(8-3/55×3)+……+(2-3/55×9)+(1-3/55×10)=
简便计算:1/55+2/55+3/55+4/55+5/55+6/55+7/55+8/55+9/55+10/55-11/1
(10-4/55*1)+(9-4/55*2)+(8-4/55*3)+...+(2-4/55*9)+(1-4/55*10)
55分之1+55分之2+55分之3+……+55分之9+55分之10-155分之11-155分之12-155分之13-……
巧算:(10-7/55*1)+(9-7/55*2)+(8-7/55*3)……(1-7/55*10
简便计算,(10-7/55*1)+(9-7/55*2)+(8-7/55*3)+...+(1-7/55*10)
巧妙计算:1/55+2/55+3/55+…+10/55-11/155-12/155-13/155-…-20/155
(1/55+2/55+3/55+~+10/55)-(11/155+12/155+~20/55)
简算(10-55分之4×1)+(9-55分之4×2)+(8-55分之4×3)+……+(2-55分之4×1)+(1-55分
简算10-55分之4×1)+(9-55分之4×2)+(8-55分之4×3)+……+(2-55分之4×1)+(1-55分之
计算:1/55+2/55+3/55+.+54/55
1 2 3…… 10等于55怎么算