1.4 Addition/ Doubles

1.4 Addition/ Doubles
8
5
9
7
6
2
4
5
3
6
+8
+5
+9
+7
+6
+2
+4
+5
+3
+6
9
6
7
2
4
5
8
3
9
6
+9
+6
+7
+2
+4
+5
+8
+3
+9
+6
8
5
6
7
3
9
2
4
6
7
+8
+5
+6
+7
+3
+9
+2
+4
+6
+7
5
2
3
7
6
8
4
5
9
3
+5
+2
+3
+7
+6
+8
+4
+5
+9
+3
1.4
Addition