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-的相反数是( )A.2 B.-2 C.- D.
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教案备课库《九年级数学作业周末作业》真题及答案
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下列叙述正确的个数是①表示互为相反数的两个数的点到原点的距离相等②互为相反数的两个数和为0③互为相反
1个
2个
3个
4个
当ab互为相反数时代数式a2+ab﹣2的值为
2
0
﹣2
﹣1
下列各组数中互为相反数的是
2与
(-1)
2
与1
-1与(-1)
2
2与│-2│
﹣2的相反数是
2
﹣2
﹣2的相反数是
2
﹣2
2的相反数是
-2
2
下列各组数中互为相反数的是
2与
(﹣1)
2
与1
﹣1与(﹣1)
2
2与|﹣2|
已知ab互为相反数n是正整数则.
a
2n
、b
2n
一定互为相反数
a
n
、b
n
一定互为相反数
a
2n+1
、b
2n+1
一定是互为相反数
a
n+1
、b
n+1
一定是互为相反数
下列各组数中互为相反数的是
2与
(-1)
2
与1
-1与(-1)
2
2与│-2│
下列各组数中互为相反数的是
2与
(-1)
2
与1
-1与(-1)
2
2与│-2│
下列说法①若ab互为相反数则a+b=0②若a+b=0则ab互为相反数③若ab互为相反数则④若则ab互
1个
2个
3个
4个
下列各组数中互为相反数的是
2与
2与
﹣2与
|﹣2|与2
下列各组数中互为相反数的是.
2与
(- 1)
2
与1
- 1与(- 1)
2
2与| -2|
式子-的意义是.
3与2商的相反数的平方;
3的平方与2的商的相反数;
3除以2的平方的相反数;
3的平方的相反数除2.
方程3x+6=0的解的相反数是
2
﹣2
3
﹣3
下列说法①0的相反数是0②与1.5互为相反数③-+2和+-2互为相反数④a的相反数是-a⑤-+1是-
有理数-2的相反数是
2
-2
-
下列结论正确的有①任何数都不等于它的相反数②符号相反的数互为相反数③表示互为相反数的两个数的点到原点
2个
3个
4个
5个
若7﹣2x和5﹣x的值互为相反数则x的值为
4
2
﹣12
﹣7
下列说法中正确的有①互为相反数的两个数的绝对值相等②正数和零的绝对值都等于它本身③只有负数的绝对值是
1个
2个
3个
4个
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