摘要:A.0.43×10-4 B.0.43×104 C.4.3×10-5 D.0.43×105
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观察下列有规律的点的坐标:
A1(1,1);A2(2,-4);A3(3,4);A4(4,-2);A5(5,7);A6(6,-
);A7(7,10);A8(8,-1)…,
依此规律,A11的坐标为
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A1(1,1);A2(2,-4);A3(3,4);A4(4,-2);A5(5,7);A6(6,-
4 |
3 |
依此规律,A11的坐标为
(11,16)
(11,16)
,A12的坐标为(12,-
)
2 |
3 |
(12,-
)
.2 |
3 |
将下列各数填入相应的集合中.
,-1,12,0,-3.01,-15,-
,180,-43,(-3)2,-45%,1,0.62.
(1)整数:
(2)自然数:
(3)正数:
,12,180,(-3)2,1,0.62
,12,180,(-3)2,1,0.62;
(4)负数
(5)偶数:
(6)奇数:
(7)分数:
,-3.01,-
,-45%,0.62
,-3.01,-
,-45%,0.62;
(8)非负数:
,12,0,180,(-3)2,1,0.62
,12,0,180,(-3)2,1,0.62;
(9)非负整数:
(10)非负有理数:
,12,0,180,(-3)2,1,0.62
,12,0,180,(-3)2,1,0.62.
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22 |
7 |
2 |
3 |
(1)整数:
-1,12,0,-15,180,-43,(-3)2,1
-1,12,0,-15,180,-43,(-3)2,1
,(2)自然数:
12,0,180,(-3)2,1
12,0,180,(-3)2,1
;(3)正数:
22 |
7 |
22 |
7 |
(4)负数
-1,-3.01,-15,-43,-45%,
-1,-3.01,-15,-43,-45%,
;(5)偶数:
12,0,180
12,0,180
;(6)奇数:
-1,-15,-43,(-3)2,1
-1,-15,-43,(-3)2,1
;(7)分数:
22 |
7 |
2 |
3 |
22 |
7 |
2 |
3 |
(8)非负数:
22 |
7 |
22 |
7 |
(9)非负整数:
12,0,180,1
12,0,180,1
;(10)非负有理数:
22 |
7 |
22 |
7 |
计算题:
(1)(-17)+(-3)
(2)8-(-12)
(3)(-10)×(-2.5)
(4)(-1
)×
÷(-
)
(5)-20+(-17)-(-18)-11
(6)(-8)×(-7)-12÷(-3)
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(1)(-17)+(-3)
(2)8-(-12)
(3)(-10)×(-2.5)
(4)(-1
1 |
3 |
6 |
7 |
4 |
3 |
(5)-20+(-17)-(-18)-11
(6)(-8)×(-7)-12÷(-3)
(2013•台湾)某社团有60人,附表为此社团成员年龄的次数分配表.求此社团成员年龄的四分位距为何?( )
|
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