设a是最小的自然数,b是最大的负整数,c是绝对值最小的有理数,则a-b+c的值为几?
更新时间:2022-09-04 12:46:52
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【推荐1】现场学习:无限循环小数
可以写成分数形式,求解过程是:设
,由
可知,
,所以
,
,
,解方程,得
.解决问题:请你将
化成分数的形式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd7170a19afa2831ee5d9383d79cd190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990f4c52e6ce4b2a7ac17dd95ea4e1ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95eb0dec266fdd856615e785cb1e9c30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b878df27cbb3b0aff24dd918cc94853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a28f6c817781fa475ea637f245eddf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d03f5366c6bfdd6a787e1af1f0c90af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf8ca5cd31375ed03180afbf30aa639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fac9575a5985527e283f7295fdaf72c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9caf6cc5b70dce502b2463857d9546.png)
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【推荐2】把下列有理数填入图中相应的圈内.
,
,
,0,2,
,
,
,并用“<”号连接起来.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05a452a777d62f530e3de76e03d9f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30d314a642667fef559032264647366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead4951a963f4074512ab092d395d583.png)
![](https://img.xkw.com/dksih/QBM/2020/11/13/2599113862930432/2607590701023232/STEM/ce458b06-0c70-4eee-a748-78bbb5e3c614.png)
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【推荐1】把下列各数序号填入相应集合括号内.
①
;②
;③
;④
;⑤10;⑥0.
负数集合:{______
};
分数集合:{______
};
非负整数集合:{______
}.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00eec25964bce509d9511dfe8461961b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e089c43cf0bfd06bd84d19fb10f5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30d314a642667fef559032264647366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f626062cdba251c8f736fa95e5f4fac4.png)
负数集合:{______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
分数集合:{______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
非负整数集合:{______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
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【推荐2】把下列各数填入它所属的集合内:
8,
,
,
,0,
,2.3333…,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb00d558e456638de8ff1788db5a8d4.png)
(1)分数集合{ …};
(2)自然数集合{ …};
(3)非正整数集合{ …};
(4)负数集合{ …}.
8,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2267442b286785e89a0b5fb19b039669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be3212a0536b9cf44a8ed465174bded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e9e100cf48e158273de0a34aef01c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb00d558e456638de8ff1788db5a8d4.png)
(1)分数集合{ …};
(2)自然数集合{ …};
(3)非正整数集合{ …};
(4)负数集合{ …}.
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【推荐1】一辆出租车一天上午从某商场出发在东西大街上运行,若规定向东为正,向西为负,行车里程(单位:km)依次如下:
.
(1)将最后一名乘客送到目的地,出租车离该商场有多远?
(2)按出租车每行驶100km油耗为10L,1L汽油的售价为7.2元,计算出租车在该上午消耗汽油的金额是多少元?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61037ad9d544d0f15045a8b5cf343090.png)
(1)将最后一名乘客送到目的地,出租车离该商场有多远?
(2)按出租车每行驶100km油耗为10L,1L汽油的售价为7.2元,计算出租车在该上午消耗汽油的金额是多少元?
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