#2702. Sum and Difference

Mathematics, level: Elementary
Posted Sun Sep 29 11:51:47 PDT 2002 by Barb (barbkuy@evansville.net).
Howard Roosa Elementary, Evansville Indiana
Materials Required: paper, pencil, transparency
Activity Time: 5-10 minutes
Concepts Taught: Sum and Difference, Number Sense

I use this as an alternative to practicing addition and subtraction facts with fourth graders. I put the first pages on a transparencies and only show one at a time. It's a good warm up or time filler at the end of the period. Students can move from figuring them out to making their own and exchanging them.

The cut and paste didn't come out looking very good. You could save it into Word or Word Perfect and then print it out.

 Sum and Difference 1
Sums 10 and under

1. Two numbers have a sum of 9 and a difference of 3. What are the numbers?
3,6

2. Two numbers have a sum of 9 and a difference of 1. What are the numbers?
4,5

3. Two numbers have a sum of 10 and a difference of 2. What are the numbers?
4,6

4. Two numbers have a sum of 4 and a difference of 0. What are the numbers?
2,2

5. Two numbers have a sum of 7 and a difference of 1. What are the numbers?
3,4

6. Two numbers have a sum of 9 and a difference of 5. What are the numbers?
2,7

7. Two numbers have a sum of 10 and a difference of 6. What are the numbers?
2,8

8. Two numbers have a sum of 3 and a difference of 1. What are the numbers?
1,2

9. Two numbers have a sum of 10 and a difference of 0. What are the numbers?
5,5

10. Two numbers have a sum of 6 and a difference of 0. What are the numbers?
3,3

11.Two numbers have a sum of 5 and a difference of 1. What are the numbers?
2,3

12. Two numbers have a sum of 8 and a difference of 4. What are the numbers?
2,6

Sum and Difference 2
Sums 10 and under

13. Two numbers have a sum of 9 and a difference of 7. What are the numbers?
1,8

14. Two number have a sum of 6 and a difference of 0. What are the numbers?
3,3

15. Two numbers have a sum of 6 and a difference of 2. What are the numbers?
2,4

16. Two numbers have a sum of 7 and a difference of 3. What are the numbers?
2,5

17. Two numbers have a sum of 6 and a difference of 4. What are the numbers?
1,5

18. Two numbers have a sum of 10 and a difference of 4. What are the numbers?
3,7

19. Two numbers have a sum of 5 and a difference of 3. What are the numbers?
1,4

20. Two numbers have a sum of 8 and a difference of 2. What are the numbers?
3,5

21. Two numbers have a sum of 4 and a difference of 2. What are the numbers?
1,3

22. Two numbers have a sum of 7 and a difference of 5 . What are the numbers?
1,6

23. Two numbers have a sum of 8 and a difference of 6. What are the numbers?
1,7

24. Two numbers have a sum of 10 and a difference of 8. What are the numbers?
1,9
Sum and Difference 3
Sums to 20

1. Two numbers have a sum of 15 and a difference of 1. What are the numbers?
7,8

2. Two numbers have a sum of 12 and a difference of 6. What are the numbers?
3,9

3. Two numbers have a sum of 19 and a difference of 1. What are the numbers?
9,10

4. Two numbers have a sum of 13 and a difference of 1. What are the numbers?
6,7

5. Two numbers have a sum of 14 and a difference of 0. What are the numbers?
7,7

6. Two numbers have a sum of 12 and a difference of 4. What are the numbers?
4,8

7. Two numbers have a sum of 17 and a difference of 1. What are the numbers?
8,9

8. Two numbers have a sum of 16 and a difference of 0. What are the numbers?
8,8

9. Two numbers have a sum of 15 and a difference of 3. What are the numbers?
6,9

10. Two numbers have a sum of 16 and a difference of 2. What are the numbers?
7,9

11. Two numbers have a sum of 19 and a difference of 1. What are the numbers?
9,10

12. Two numbers have a sum of 20 and a difference of 4. What are the numbers?
8,12

Sum and Difference 4
Sums to 20

13. Two numbers have a sum of 16 and a difference of 6. What are the numbers?
5,11

14. Two numbers have a sum of 19 and a difference of 9. What are the numbers?
5,14

15. Two numbers have a sum 18 of and a difference of 12. What are the numbers?
3,15

16. Two numbers have a sum of 17 and a difference of 13. What are the numbers?
2,15

17. Two numbers have a sum of 19 and a difference of 3. What are the numbers?
8,11

18. Two numbers have a sum of 19 and a difference of 7. What are the numbers?
6, 13

19. Two numbers have a sum 14 of and a difference of 2. What are the numbers?
6,8

20. Two numbers have a sum of 17 and a difference of 7. What are the numbers?
5,12

21. Two numbers have a sum 18 of and a difference of 8 . What are the numbers?
5,13

22. Two numbers have a sum 15of and a difference of 13. What are the numbers?
1,14

23. Two numbers have a sum 16 of and a difference of 10 . What are the numbers?
3,13

24. Two numbers have a sum of 18 and a difference of 4 . What are the numbers?
7,11
Name ______________________________

Make Your Own Sum and Difference
Remember to write your answers first!

1. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

2. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

3. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

4. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

5. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

6. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

7. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

8. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

9. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

10. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

11. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

12. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

13. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

14. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

15. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

16. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____
17. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____

18. Two numbers have a sum of ____ and a difference of ____ . What are the
numbers?
Answer ____, ____