0.2+0.4+0.6+······+9.8等于多少急

来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/17 12:48:58
0.2+0.4+0.6+······+9.8等于多少急0.2+0.4+0.6+······+9.8等于多少急0.2+0.4+0.6+······+9.8等于多少急0.2+0.4+0.6+······+

0.2+0.4+0.6+······+9.8等于多少急
0.2+0.4+0.6+······+9.8等于多少
急

0.2+0.4+0.6+······+9.8等于多少急
0.2+0.4+0.6+······+9.8
=(0.2+9.8)+(0.4+9.6)+...+(4.8+5.2)+5.0
=49×5
=245;
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,

等于 245

0.2+0.4+0.6+······+9.8
=[(2+98)+(4+96)+……+(48+52)]/10+5
=[100*5*4+100*4+50]/10
=[2000+400+50]/10
=245

0.2+0.4+0.6+······+9.8等于多少急 10-9.8+9.6-9.4+9.2-9···+0.8-0.6+0.4-0.2 1 2 3 4 ·····7 ·······10 ········?1 3 5 7 ·····?······?··········290 1 4 9 ·····?······?··········? 0.1+0.2+0.3+0.4+0.5+0.6+0.7+0.8+0.9+0.10+0.11········0.29+0.30 ···· · · · ···· ·········· ·········· 四年级下册语文第9课主要内容简便完整,很急啊···························· 0.1+0.2+0.3+0.4+······+0.98+0.99等于几? 人教版9年级语文【基础训练】55和56页的题目怎么做··························是56和57页的 9年级上册·················································· 求··············· 什么植物有应激性只要植物名 ········································································································· 急·························· 急 ··············急············