计算:0.1+0.2+0.3+…+0.8+0.9+0.10+0.11+0.12+…+0.98+0.99+1.00=_.
问题描述:
计算:0.1+0.2+0.3+…+0.8+0.9+0.10+0.11+0.12+…+0.98+0.99+1.00=______.
答
0.1+0.2+0.3+…+0.8+0.9+0.10+0.11+0.12+…+0.98+0.99+1.00,
=(0.1+0.2+0.3+…+0.8+0.9)+(0.10+0.11+0.12+…+0.98+0.99+1.00),
=(0.1+0.9)×9÷2+(0.10+1.00)×91÷2,
=4.5+50.05,
=54.55;
故答案为:54.55.