文档介绍：2
—X 2 =
19
2 3
-X —=
9 8
19
—X 15 =
20
4
—X 8 =
15
2 3
―X —=
9 8
1
19 X -=
8
7
—X 12 = 18
25 11
X—=
7
3 1X1- =
8
4 3
—X —= 15 8
7
—X 2 = 18
2
—X 0 =
9
4 6
—X —=
9 8
3
—X 3 =
24
2 3
—X —=
9 8
1
9 X-=
3
3
—X 4 = 44
5
-X 12 =
3
4
-X 10 =
5
2
—X 7 = 49
5
54 X —=
18
4 3
—X —=
7 14
2
12 X -=
3
7 4
—X —= 24 7
7 7
—X —=
5 5
2
-X 25 =
5
3
9 X-=
8
3
-X 20 =
5
2
45 X —=
15
2 3
—X 3 —— 18 8
5 4X-=
6
2
57 X —=
38
11
—X 15 =
15
2 2
—X —= 4 9
2 3
—X — —• 27 8
19
—X 20 =
20
3 2 -X -=
5 3
40 9
一X -=
9 8
19 X —=
18
7
—X 16 = 18
25 11
—X —=
11 50
7
48 X —=
12
2
—X 2 = 27
12
—X —=
4
5 3
—X —= 18 8
3
—X 8 = 48
3 7X—=
14
3
18 X -=
8
2
—X 3 = 33
4 3
—X -= 15 8
4
—X 25 =
15
2
—X 38 =
19
2
15 X 3 —=
15
6
-X 55 =
5
3
—X 24 =
14
2 3
一 X 4— =
9 8
2
-X 12 =
3
2
-X 10 =
9
3
12 X —=
18
4
—X 25 =
25
1 3
—X -= 18 4
9
25 X —=
10
16 23 —X —=
23 8
2
30 X —=
15
3 8
—X -=
14 9
4
-X 27 =
9
5
—X 8 =
24
4 27
—X —=
9 8
1 7
—X —= 42 8
3
20 X —=
14
4
-X 15 =
5
5
-X 21 =
7
3
44 X —=
11
3
24 X —=
12
14 3
—X —=
5 8
3
16 X -=
4
4
-X 12 =
5
1 5
—X —= 15 8
3
14 X -= 7
3
16 X -=
8
5 40 X -=
8
3 7X—= 28
4 9
—X —= 18 16
3 25
—X —=
15 24
13
—X 8 = 48
8
21 X —=
21
14 3
—X —— 9 21
6
42 X -=
7
5
-X 14 =
2
8
-X 45 =
9
2
-X 3 =
9
4 15
—X —= 15 3
6 56 X -=
7
8 3
—X -= 36 8
3
-X 9 =
5
3
16 X —= 24
2
——X 30 = 100
4
-X 45 =
5
5 24X -=
6
3 28X- =
8
5 4X —=
16
8
—X 0 =
25
3 35 X —=
5
30 11
—X —=
33 50
15 3 —X ——
14 5
7 25X- =
5
4 3
—X -= 27 8
10 -X—=
7
5
-X 12 =
6
5
—X 14 = 28
35
—X —=
4
7 14 X -=
8
4 5
—X —= 15 24
14
—X ——
9
4
—X 3 =
15
3
—X 12 =
25
3 3X —= 81
16 3
—X ——
27 8
3
16 X —=
8
5
—X 20 = 12
2
—X 10 = 30
5
24 X -=
8
7
18 X -=
6
3
8 X —=
14
7 56 X —=
8
3
14 X —=
21
4 —X 17
17 =
3 -X
5
15 =