1
)
20
+
0
=
____________________
2
)
1
+
10
=
____________________
3
)
10
+
0
=
____________________
4
)
5
+
10
=
____________________
5
)
10
+
7
=
____________________
6
)
10
+
2
=
____________________
7
)
3
+
10
=
____________________
8
)
8
+
10
=
____________________
9
)
6
+
10
=
____________________
10
)
0
+
20
=
____________________
11
)
13
+
2
=
____________________
12
)
11
+
4
=
____________________
13
)
17
+
2
=
____________________
14
)
15
+
3
=
____________________
15
)
12
+
8
=
____________________
