文档介绍：江苏省滨海县第一初级中学七年级数学上册? 绝对值与相反数?导学案(1
County continuation records has examined and approved the draft, spirit, 所以－3的绝对值是3,
自主备课〔学****br/> 问: 表示－2的点到原点的距离是 , 所以－2的绝对值是 .
表示2的点到原点的距离是 , 所以2的绝对值是 .
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work4
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
表示0的点到原点的距离是 , 所以0的绝对值是 .
重点也也是难点
注意：绝对值为正数的数有两个。
例如：绝对值为5的数是＋5和－5
你做对了吗
＋－
提问；绝对值为0的数是
二．自主探究
1、个，
它们分别表示有理数和。
2、绝对值等于6的数是。
例1、说出数轴上A、B、C、D、E各点所表示的数的绝对值。
0
1
2
3
4
5
-1
-2
-3
-4
-5
●
●
●
●
●
A
B
C
D
E
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defen