计算:1.1+4.4+7.7+10.10+13.13+……+55.55+58.58原式=(1+4+7+10+13......+58)+(0.1+0.4+0.7)+(0.10+0.13……+0.55+0.58)=(1+58)*20/2+1.2+(0.10+0.58)* 17/2 =596.98
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/02 03:07:36
![计算:1.1+4.4+7.7+10.10+13.13+……+55.55+58.58原式=(1+4+7+10+13......+58)+(0.1+0.4+0.7)+(0.10+0.13……+0.55+0.58)=(1+58)*20/2+1.2+(0.10+0.58)* 17/2 =596.98](/uploads/image/z/16207-7-7.jpg?t=%E8%AE%A1%E7%AE%97%3A1.1%2B4.4%2B7.7%2B10.10%2B13.13%2B%E2%80%A6%E2%80%A6%2B55.55%2B58.58%E5%8E%9F%E5%BC%8F%3D%281%2B4%2B7%2B10%2B13......%2B58%29%2B%280.1%2B0.4%2B0.7%29%2B%280.10%2B0.13%E2%80%A6%E2%80%A6%2B0.55%2B0.58%29%3D%281%2B58%29%2A20%2F2%2B1.2%2B%280.10%2B0.58%29%2A+17%2F2+%3D596.98)
计算:1.1+4.4+7.7+10.10+13.13+……+55.55+58.58原式=(1+4+7+10+13......+58)+(0.1+0.4+0.7)+(0.10+0.13……+0.55+0.58)=(1+58)*20/2+1.2+(0.10+0.58)* 17/2 =596.98
计算:1.1+4.4+7.7+10.10+13.13+……+55.55+58.58
原式=(1+4+7+10+13......+58)+(0.1+0.4+0.7)+(0.10+0.13……+0.55+0.58)
=(1+58)*20/2+1.2+(0.10+0.58)* 17/2 =596.98
计算:1.1+4.4+7.7+10.10+13.13+……+55.55+58.58原式=(1+4+7+10+13......+58)+(0.1+0.4+0.7)+(0.10+0.13……+0.55+0.58)=(1+58)*20/2+1.2+(0.10+0.58)* 17/2 =596.98
原式=1+0.1+4+0.4+7+0.7+……+58+0.58
=1+4+7+10+……+58+(0.1+0.4+0.7)+(0.10+0.13+0.16+……+0.55+0.58)
=(1+58)×20÷2+1.2+(0.10+0.58)×17÷2
=590+1.2+5.78
=598.98
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1.1+4.4+7.7+10.10+13.13+……+55.55+58.58
= (1.1+4.4+7.7) + (10.10+13.13+……+55.55+58.58)
= 13.2 + (58.58+10.10)(58.58-10.10) / 3.03/2
= 13.2 + (58.58+10.10)*(58-10)*1.01 / 3.03/2<...
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1.1+4.4+7.7+10.10+13.13+……+55.55+58.58
= (1.1+4.4+7.7) + (10.10+13.13+……+55.55+58.58)
= 13.2 + (58.58+10.10)(58.58-10.10) / 3.03/2
= 13.2 + (58.58+10.10)*(58-10)*1.01 / 3.03/2
= 13.2 + (58.58+10.10)*(58-10) / 3/2
= 13.2 + (58.58+10.10)*48 / 6
= 13.2 + (58.58+10.10)*8
= 13.2 + 68.68*8
= 13.2 + 548.44
= 561.64
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