一、在〇里填“＞”“＜”或“=”。
11.7 - 0.8〇5.4 + 6.2
3.7 + 12.5〇17.4 - 2.2
4.8 + 12.5〇20.7 - 3.4
50.5 - 20.9〇9.3 + 20.3
34.3 - 11.8〇16.3 + 5.8
3.5 + 16.5〇26.4 - 6.4
7.6 + 3.9〇12.4 - 2.8
4.6 + 5.9〇12.3 - 1.8

＜ ＞
= =
＞ =
＞ =

二、用竖式计算。
4.5 + 21.8
15.1 - 2.6
26.9 + 7.4
34.5 - 18.8
10.9 + 10.5
41.9 - 33.8
21.5 + 9.7
38.2 + 12.9
32.4 - 10.5
19.9 + 11.4
40.6 - 26.7
29.4 - 13.6
17.2 - 9.9
15.8 + 16.6
20.5 + 2.9
42.7 - 13.2
20.4 - 7.8
31.8 + 11.5
33.5 + 17.7
40.3 - 15.5
70.1 - 62.2
45.8 - 12.9
21.4 - 9.6
34.8 + 27.3
26.4 + 28.7
70.5 - 36.6
60.5 - 32.8

26.3 12.5 34.3
15.7 21.4 8.1
31.2 51.1 21.9
31.3 13.9 15.8
7.3 32.4 23.4
29.5 12.6 43.3
51.2 24.8 7.9
32.9 11.8 62.1
55.1 33.9 27.7