Addition Facts: The Twelves
12
+
0
=
12
12
+
1
=
13
12
+
2
=
14
12
+
3
=
15
12
+
4
=
16
12
+
5
=
17
12
+
6
=
18
12
+
7
=
19
12
+
8
=
20
12
+
9
=
21
12
+
10
=
22
12
+
11
=
23
12
+
12
=
24
Arithmetic Fact Pages, compliments of S&S Software. (http://www.sssoftware.com).
© 1999 by S&S Software.