问题
解答题
计算:0.1+0.3+0.5+0.7+0.9+0.11+0.13+0.15+…+0.97+0.99.
答案
(0.1+0.99)×[(0.99-0.1)÷0.2+1]÷2,
=1.09×50÷2,
=27.25.
计算:0.1+0.3+0.5+0.7+0.9+0.11+0.13+0.15+…+0.97+0.99.
(0.1+0.99)×[(0.99-0.1)÷0.2+1]÷2,
=1.09×50÷2,
=27.25.