1. Presentation Created by: Therese Duffy
Basic Addition
and Subtraction Facts
Presentation Created by: Therese Duffy
10/1/08

2. +2
1+2= 3
2+2=
6+2= 4 8
3+2=
7+2= 5 9
4+2=
9+2=
8+2= 6 11
5+2= 10
10+2= 12 7

3. +2 (mixed order) 1+2= 6+2= 3 4+2= 8 2+2= 6 10+2= 4 12 5+2= 3+2= 7 7+2=9
8+2=
9+2= 10 11

4. + 3 Watch carefully, they disappear.
9+3= 10
+ 3 Watch carefully, they disappear. 8
6+3=
7+3= 7 3
2+3= 13
4+3=
5+3= 6 12 11 5
8+3=
10+3=
1+3= 4
0+3=
3+3= 9

5. + 3 (mixed order) Watch carefully, they disappear.
9+3= 10
+ 3 (mixed order) Watch carefully, they disappear. 8
6+3=
7+3= 7 3
2+3= 13
4+3=
5+3= 6 12 11 5
8+3=
10+3=
1+3= 4
0+3=
3+3= 9

6. 8+4= 11 +4 12
7+4=
1+4=
5+4= 5 9
4+4= 8 7
3+4= 13 6
6+4=
10+4=
9+4=
2+4= 10 14

7. +4 (mixed order) 11 8+4= 7+4= 12 1+4= 5+4= 5 9 4+4= 8 7 3+4= 13 6 6+4=
10+4=
9+4=
2+4= 10 14

8. +5
10+5=
8+5= 15 14
9+5= 13
7+5= 12 11
6+5= 10
5+5=
4+5=
3+5= 9 8 7
2+5=
0+5=
1+5= 6 5

9. +5 (mixed order) 10+5= 8+5= 15 14 9+5= 13 7+5= 12 11 6+5= 10 5+5= 4+5=
3+5= 9 8 7
2+5=
0+5=
1+5= 6 5

10. +6
0+6=
2+6=
1+6= 6 8 7
9+6=
10+6=
3+6=
5+6=
4+6= 9 15 16 10 11
7+6=
6+6=
8+6= 12 13 14

11. +6 (mixed order) 5+6= 1+6= 14 11 7 10+6= 16 7+6= 9+6= 4+6= 13 10 15
8+6=
5+6=
1+6= 14 11 7
10+6= 16
7+6=
9+6=
4+6= 13 10 15
6+6=
2+6=
3+6= 8 12 9

12. +7
1+7
2+7
3+7
4+7 8 9 10 11
5+7
6+7
7+7
8+7 12 13 14 15
9+7
10+7 16 17

13. +7 (mixed order) 1+7 9+7 6+7 5+7 8 16 13 12 10+7 8+7 2+7 3+7 17 15 9
4+7
7+7 11 14

14. +8
1+8= 9
2+8= 10
3+8= 11
4+8= 12
5+8= 13
6+8= 14
7+8= 15
8+8= 16
9+8= 17
Fly in
10+8= 18

15. +8 (mixed order) 3+8= 11 5+8= 13 8+8= 16 10+8= 18 2+8= 10 1+8= 9 4+8=12
6+8= 14
9+8= 17
Fly in
7+8= 15

16. +9
1+9 10
2+9 11
0+9 9
3+9 12
4+9 13
5+9 14
6+9 15
7+9 16
8+9 17
9+9 18
10+9 19

17. +9 (mixed order) 10+9 19 3+9 12 8+9 17 1+9 10 7+9 16 5+9 14 6+9 15 9+918
4+9 13
2+9 11
0+9 9

18. +10
0+10
2+10
1+10 10 11 12
3+10 13
4+10 14
5+10 15
6+10 16
7+10 17
10+10
8+10 18
9+10 19 20

19. +10 (mixed order)
7+10
10+10
4+10 17 14 20
2+10 12
8+10 18
6+10 16
3+10 13
1+10 11
0+10 10
9+10 19
5+10 15

20. Stop Sign