12 + 28 28 – 19 90 5245 – 22 62 99 – 51 34 + 1633 + 67 – 15 99 – 31 55 + 45 – 24 71 + 29 – 891 – 26 49 – 32 59 42 – 590 – 35 45 80 – 16 43 + 49 - 1225 + 28 43 + 49 – 12 34 + 33 + 32 5267 12 + 28 42 – 5 34 + 1699 – 31 28 – 19 45 45 – 2246 95 81 + 19...
Bài 1: Sắp xếp.
12 + 28
28 – 19
90
52
45 – 22
62
99 – 51
34 + 16
33 + 67 – 15
99 – 31
55 + 45 – 24
71 + 29 – 8
91 – 26
49 – 32
59
42 – 5
90 – 35
45
80 – 16
43 + 49 - 12
25 + 28
43 + 49 – 12
34 + 33 + 32
52
67
12 + 28
42 – 5
34 + 16
99 – 31
28 – 19
45
45 – 22
46
95
81 + 19 – 13
90 – 35
82
26 + 45
16 + 4
49 – 32
51
99 – 31
80 – 47
62
35 + 65 – 16
71 + 29 – 8
18 + 43
99 – 51
34 + 16
42 – 5
35 + 46 + 13
25 + 28
28
95
6
80 – 16
90 – 35
55 – 13
59
75