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.