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# Addition Pyramids - PowerPoint PPT Presentation

Addition Pyramids. 3. 4. 5. 7. 9. 16. Addition Pyramids. 12. 4. -4. 16. 0. 16. 8. 1. 12. 43. 9. 36. 3. 13. 72. 17. -5. 4. 15. 20. 6. 8. 5. -26. Addition Pyramids. 11. 9. 25. 28. 13. 9. 20. 53. 22. 60. 37. -4. 3. 108. 46. 97. -1. 154.

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Presentation Transcript
8

1

12

43

9

36

3

13

72

17

-5

4

15

20

6

8

5

-26

11

9

25

28

13

9

20

53

22

60

37

-4

3

108

46

97

-1

154

5

3

9

18

6

23

23

4

17

11

5

9

20

70

65

24

26

30

7

7

7

11

9

11

13

30

40

1

7

5

41

24

10

16

14

16

n

5

3

n + 5

8

n + 13

n + 5 + 8

n

14

d

4

14

4

y

11

x

23

5

7

g

e

6

11

17

3

8

40

11

n + 5

d + 23

e + 7

n + 13

d + 63

e + 18

25

4+ y

y + 6

14 + x

x + 11

g + 11

g + 36

2y + 10

2x + 25

14 + x + x + 11

4 + y + y + 6

n

5

3

n + 5

8

n + 13

If this rectangle

is equal to 20, what is

this rectangle worth?

n

- 13

n + 13

= 20

n

= 7

n

7

5

3

n + 5

7 + 5

12

8

n + 13

20

4

7

e

8

40

11

n + 5

d + 23

e + 7

= 20

= 100

n + 13

d + 63

e + 18

14

11

g

d

n

23

5

3

17

25

g + 11

= 35

= 49

g + 36