1.
21
+
21
=
(
)
2.
12
+
12
=
(
)
3.
44
+
44
=
(
)
4.
48
+
48
=
(
)
5.
16
+
16
=
(
)
6.
4
+
4
=
(
)
7.
33
+
33
=
(
)
8.
46
+
46
=
(
)
9.
38
+
38
=
(
)
10.
31
+
31
=
(
)
11.
2
+
2
=
(
)
12.
15
+
15
=
(
)
13.
35
+
35
=
(
)
14.
5
+
5
=
(
)
15.
10
+
10
=
(
)
16.
26
+
26
=
(
)
17.
0
+
0
=
(
)
18.
28
+
28
=
(
)
19.
19
+
19
=
(
)
20.
50
+
50
=
(
)
21.
20
+
20
=
(
)
22.
49
+
49
=
(
)
23.
18
+
18
=
(
)
24.
32
+
32
=
(
)
25.
13
+
13
=
(
)
26.
17
+
17
=
(
)
27.
36
+
36
=
(
)
28.
27
+
27
=
(
)
29.
24
+
24
=
(
)
30.
47
+
47
=
(
)
31.
41
+
41
=
(
)
32.
8
+
8
=
(
)
33.
42
+
42
=
(
)
34.
43
+
43
=
(
)
35.
25
+
25
=
(
)
36.
3
+
3
=
(
)
37.
9
+
9
=
(
)
38.
11
+
11
=
(
)
39.
14
+
14
=
(
)
40.
1
+
1
=
(
)
41.
23
+
23
=
(
)
42.
40
+
40
=
(
)
