1. Look and calculate. 15 + 1 = 16
2. Do these calculations.
7
+
1
=
1
7
+
1
=
6
+
2
=
1
6
+
2
=
5
+
5
=
1
5
+
5
=
7
+
2
=
1
7
+
2
=
4
+
4
=
1
4
+
4
=
1
+
3
=
1
1
+
3
=
16 + 1 = ........
1 + 16 = ........
17 + 2 = ........
2 + 17 = ........
12 + 3 = ........
3 + 12 = ........
5
+
1
=
1
5
+
1
=
3
+
4
=
1
3
+
4
=
3
+
6
=
1
3
+
6
=
12 + 2 = ........
2 + 12 = ........
18 + 1 = ........
1 + 18 = ........
11 + 6 = ........
6 + 11 = ........
14 + 4 = .......
4 + 14 = .......
15 + 4 = .......
4 + 15 = .......
13 + 5 = .......
5 + 13 = .......
