1. Sliding Decimal Points
Lesson # 14
Sliding Decimal Points

2. When we divide a number by 10…
The decimal point slides
One place
To the
Left
Watch…

3. 123 ÷ 10 = ?
12.3
Right!

4. So when dividing by 100… The decimal point Slides Two places To the
Left
Watch…

5. 123 ÷ 100 =
1.23

6. Similar rules apply
When
Multiplying By 10 Or
100

7. The only difference… Opposite (right) The decimal point Slides In The
Direction
Watch…

8. 123 x 10 = ?
1230

9. 123 x 100 = ?
12 300

10. Got it ?
I hope so,
Because
Here come 10
Practice questions…

11. Ready?
Set…
Go !

12. Question # 1
324 ÷ 10 = ?

13. Question # 2
56 x 100 = ?

14. Question # 3
78.9 x 10 = ?

15. Question # 4
12.34 ÷ 10 = ?

16. Question # 5
X 100 = ?

17. Question # 6
7.89 ÷ 10 = ?

18. Question # 7
912.3 X 100 = ?

19. Question # 8
0.456 ÷ 10 = ?

20. Question # 9
0.78 ÷ 100 = ?

21. Question # 10
0.925 x 100 = ?

22. And now for the answers…
Get Ready

23. Question # 1
324 ÷ 10 =
32.4

24. Question # 2
56 x 100 =
5600

25. Question # 3
78.9 x 10 =
789

26. Question # 4
12.34 ÷ 10 =
1.234

27. Question # 5
3.456 X 100 =
345.6

28. Question # 6
7.89 ÷ 10 =
0.789

29. Question # 7
912.3 X 100 =
91 230

30. Question # 8
0.456 ÷ 10 =
0.0456

31. Question # 9
0.78 ÷ 100 =
0.0078

32. Question # 10
0.925 X 100 =
92.5

33. The
End

34. Of course…
Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice Practice