0.1+0.2+0.3+...+0.8+0.9+0.12+0.14+0.16+...+0.88 =等于多少,

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0.1+0.2+0.3+...+0.8+0.9+0.12+0.14+0.16+...+0.88 =等于多少,
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0.1+0.2+0.3+...+0.8+0.9+0.12+0.14+0.16+...+0.88 =等于多少,
0.1+0.2+0.3+...+0.8+0.9+0.12+0.14+0.16+...+0.88 =
等于多少,

0.1+0.2+0.3+...+0.8+0.9+0.12+0.14+0.16+...+0.88 =等于多少,
0.1+0.2+0.3+...+0.8+0.9+0.12+0.14+0.16+...+0.88
= ﹙ 0.1+0.9﹚*9/2+﹙0.12+0.88﹚*39/2
=4.5+19.5
=24

0.1+0.2+0.3+...+0.8+0.9+0.12+0.14+0.16+...+0.88
= ﹙ 0.1+0.9﹚*9/2+﹙0.12+0.88﹚*39/2
=4.5+19.5
=24