50.99—17.11 39.01—23.89 怎样简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/13 04:11:56
50.99—17.11 39.01—23.89 怎样简便计算
50.99—17.11 39.01—23.89 怎样简便计算
50.99—17.11 39.01—23.89 怎样简便计算
50.99-17.11
=51-0.01-17-0.11
=51-17-(0.01+0.11)
=34-0.12
=33+1-0.12
=33+0.88
=33.88
39.01-23.89
=39+0.01-24+0.11
=25+0.01+0.11
=25+0.12
=25.12
50.99—17.11+ 39.01—23.89=33.88+25.12=49
50.99—17.11+39.01—23.89
=(50.99+39.01)-(17.11+23.89)
=90-41
=49
专业教师为你解答。(知识就是力量!)
你好,这是一题吗?
50.99-17.11+39.01-23.89
=(50.99+39.01)-(17.11+23.89)
=90-41
=49
如果是两题,则这样算:
50.99-17.11
=51-0.01-17-0.11
=51-17-(0.01+0.11)
=...
全部展开
专业教师为你解答。(知识就是力量!)
你好,这是一题吗?
50.99-17.11+39.01-23.89
=(50.99+39.01)-(17.11+23.89)
=90-41
=49
如果是两题,则这样算:
50.99-17.11
=51-0.01-17-0.11
=51-17-(0.01+0.11)
=34-0.12
=33.88
39.01-23.89
=39+0.01-24+0.11
=39-24+0.01+0.11
=15+0.12
=15.12
亲,(*^__^* *^__^* *^__^*),能够帮助你是我最大的快乐!
如果我的回答对你有帮助,请及时选为满意答案,谢谢
如有疑问请追问,祝你学习进步!
收起
50.99 - 17.11
= 50.99 - 20.11 + 3
= 33.88
39.01 - 23.89
= 39.01 - 24 + 0.11
= 15.12
50.99 - 17.11 + 39.01 - 23.89
= (50.99 + 39.01) - (17.11 + 23.89)
= 90 - 41
= 49