1. examples When computing in other bases, think in the base 10.
Pamela Leutwyler

2. Base 7
Base 10
Base 7 5 37 4 67 + 8 27

3. Base 7
Base 10
Base 7
3+6+2= 11 14 5 37 4 67 + 8 27

4. Base 7
Base 10
Base 7
3+6+2= 11 14 1 5 37 4 67 + 8 27 47

5. Base 7
Base 10
Base 7
3+6+2= 11 14 1 5 37 4 67 + 8 27 47

6. Base 7
Base 10
Base 7
3+6+2= 11 14
1+5+4
+8= 18 24 1 5 37 4 67 + 8 27 47

7. Base 7
Base 10
Base 7
3+6+2= 11 14
1+5+4
+8= 18 24 2 1 5 37 4 67 + 8 27 47

8. Base 7
Base 10
Base 7
3+6+2= 11 14
1+5+4
+8= 18 24 2 1 5 37 4 67 + 8 27 47

10. Base 4
Base 4
Base 10 1 14 - 34

11. 1 14 - 34 Base 4 You cannot remove 3 pebbles from pile one borrow14 - 34
You cannot remove
3 pebbles from pile one
borrow

12. ? 1 14 - 34 Base 4 You cannot remove 3 pebbles from pile one borrow14 - 34
You cannot remove
3 pebbles from pile one
borrow
borrow

13. 1 14 - 34 Base 4 You cannot remove 3 pebbles from pile one borrow14 - 34
You cannot remove
3 pebbles from pile one
borrow
borrow

14. Base 4
Base 4
Base 10 1 14 - 34 1

15. Base 4
Base 4
Base 10 10 4 1 14 - 34 4 1

16. Base 4
Base 4
Base 10 10 4 1 14 - 34 3 4 1 1

17. Base 4
Base 4
Base 10 10 4 11 5 1 14 - 34 3 4 5 1 1

18. Base 4
Base 4
Base 10 10 4 11 5 1 14 - 34 2 3 4 5 1 1
In the base 4,
114 – 34 = 24
Think in base 10
= 2

19. Base 4
Base 4
Base 10 10 4 11 5 1 14 - 34 3 24 3 4 5 1 1

21. Base 8
Base 10
Base 8 7 68 x 1 58

22. Base 8
Base 10
Base 8
5x6= 30 36 7 68 x 1 58

23. Base 8
Base 10
Base 8
5x6= 30 36 3 7 68 x 1 58 6

24. Base 8
Base 10
Base 8
5x6= 30 36
(5x7) +3 38 46 3 7 68 x 1 58 6

25. Base 8
Base 10
Base 8
5x6= 30 36
(5x7) +3 38 46 4 3 7 68 x 1 58 6

26. Base 8
Base 10
Base 8
5x6= 30 36
(5x7) +3 38 46 7 68 x 1 58 4 6

27. Base 8
Base 10
Base 8
5x6= 30 36
(5x7) +3 38 46 7 68 x 1 58 4 6

28. Base 8
Base 10
Base 8
5x6= 30 36
(5x7) +3 38 46 7 68 x 1 58 4 6

29. Base 8
Base 10
Base 8
5x6= 30 36
(5x7) +3 38 46 7 68 x 1 58 4 6

30. Base 8
Base 10
Base 8
5x6= 30 36
(5x7) +3 38 46
6+6= 12 14 7 68 x 1 58 4 6
Add in the base 8

31. Base 8
Base 10
Base 8
5x6= 30 36
(5x7) +3 38 46
6+6= 12 14 7 68 x 1 58 4 6 1
Add in the base 8

32. Base 8
Base 10
Base 8
5x6= 30 36
(5x7) +3 38 46
6+6= 12 14
1+4+7= 7 68 x 1 58 4 6 1
Add in the base 8

33. Base 8
Base 10
Base 8
5x6= 30 36
(5x7) +3 38 46
6+6= 12 14
1+4+7= 7 68 x 1 58 4 6 1