0.2+0.4+0.6+0.8+1+0.12+0.14+0.16+0.18……+0.98=多少
问题描述：
0.2+0.4+0.6+0.8+1+0.12+0.14+0.16+0.18……+0.98=多少
答
请先核对一下问题
答
34.4
答
0.2+0.4+0.6+0.8+1+0.12+0.14+0.16+0.18……+0.98
=(0.2+0.4+0.6+0.8+1)+(0.12+0.14+0.16+0.18……+0.98)
=3+(0.12+0.98)×44÷2
=3+24.2
=27.2
答
50
答
先核对一下题.然后再做.