问题 解答题

(0.1+1)+(0.2+2×2)+(0.3+3×3)+…+(1+10×10)

答案

(5.大+大)+(5.2+2×2)+(5.3+3×3)+…+(大+大5×大5),

=(5.大+5.2+5.3+…+5.8+大)+(大+2×2+3×3+…+大5×大5),

=(5.大+大)×大5÷2+(大+一+8+…+大55),

=8.8+(大+8)+(一+大6)+(36+6一)+(8大+一8)+大28,

=8.8+388,

=385.8.

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