1
99:59:59,999 --> 99:59:59,999
11.7在11.5的右边

2
99:59:59,999 --> 99:59:59,999
一个是11.5 一个是11.7

3
99:59:59,999 --> 99:59:59,999
其实

4
99:59:59,999 --> 99:59:59,999
向右时数字是增大的

5
99:59:59,999 --> 99:59:59,999
所以要比11.5大 11.7＞11.5

6
99:59:59,999 --> 99:59:59,999
按照数轴的方向

7
99:59:59,999 --> 99:59:59,999
明显是11.7这个更大

8
99:59:59,999 --> 99:59:59,999
要比较大小不一定要用数轴

9
99:59:59,999 --> 99:59:59,999
都是十一点几

10
99:59:59,999 --> 99:59:59,999
都有11 但是0.7要大于0.5

11
00:00:00,502 --> 00:00:05,010
借助数轴比较11.5和11.7的大小关系

12
00:00:05,041 --> 00:00:06,879
那我先画一条数轴

13
00:00:06,879 --> 00:00:09,564
主要来看11和12之间

14
00:00:09,564 --> 00:00:11,671
因为要比较的两个数就在这个区间里

15
00:00:11,671 --> 00:00:14,487
它们都是11点几

16
00:00:14,487 --> 00:00:19,179
这里是11

17
00:00:19,179 --> 00:00:21,673
这里是12

18
00:00:21,689 --> 00:00:24,114
然后再来画中间的小数部分

19
00:00:24,114 --> 00:00:28,696
这是中点

20
00:00:28,696 --> 00:00:30,102
也就是

21
00:00:30,102 --> 00:00:35,785
11.5

22
00:00:35,785 --> 00:00:37,316
好 第一步就做完了

23
00:00:37,316 --> 00:00:39,815
已经找到了11.5

24
00:00:39,815 --> 00:00:44,698
恰好就在11和12中间

25
00:00:44,698 --> 00:00:50,085
是11.5

26
00:00:50,085 --> 00:00:53,333
然后把其他的画出来

27
00:00:53,348 --> 00:00:58,212
在数轴上都标出来

28
00:00:58,212 --> 00:01:00,711
0.1 0.2 0.3 0.4 0.5

29
00:01:00,711 --> 00:01:02,173
0.6 0.7 0.8

30
00:01:02,173 --> 00:01:06,370
0.9 然后就是12

31
00:01:06,370 --> 00:01:09,207
不是完全按比例画的

32
00:01:09,207 --> 00:01:12,413
我已经尽量画准确了

33
00:01:12,413 --> 00:01:16,188
那么11.7在哪呢？看 这是11.5

34
00:01:16,188 --> 00:01:21,854
11.6 11.7

35
00:01:21,854 --> 00:01:26,173
11.7就在这里

36
00:01:26,173 --> 00:01:31,781
0.1 0.2 0.3 0.4

37
00:01:31,797 --> 00:01:35,199
0.5 0.6 0.7

38
00:01:35,199 --> 99:59:59,999
这就是11.7