Subtraction Facts: The Ones
1
-
1
=
0
2
-
1
=
1
3
-
1
=
2
4
-
1
=
3
5
-
1
=
4
6
-
1
=
5
7
-
1
=
6
8
-
1
=
7
9
-
1
=
8
10
-
1
=
9
11
-
1
=
10
12
-
1
=
11
13
-
1
=
12
Arithmetic Fact Pages, compliments of S&S Software. (http://www.sssoftware.com).
© 1999 by S&S Software.