1. Using Standard Form to Write Large Numbers

2. What Ordinary Numbers Are These ?
Indices of Ten
What Ordinary Numbers Are These ? 2
100 10 3
1,000 4
10,000 5
100,000

3. Indices of Ten
Notice that the number of zeros
matches the index number 2
100 10 3
1,000 4
10,000 5
100,000

4. Multiplying Multiples of Ten
Multiply These Numbers
100 x 2 =
200
1,000 x 3 =
3,000
10,000 x 7 =
70,000
100,000 x 9 =
900,000

5. Multiplying Multiples of Ten
Did you notice that all you
have to do is multiply 1 x whole
number & add the zeros behind?
100 x 2 =
200
1,000 x 3 =
3,000
10,000 x 7 =
70,000
100,000 x 9 =
900,000

6. Short Cut for Writing Large Numbers
Combine these two steps for
writing large numbers.
6 x 10 2
600 =
6 x (10 x 10) = 6 x 100 = 600

7. Short Cut for Writing Large Numbers
Remember!
The index is the same as the number of zeros when using base 10. 2
6 x 10
600 =

8. What is the Ordinary Number?
7 x 10 2
700 =

9. What is the Ordinary Number?
8 x 10 3
8,000 =

10. What is the Ordinary Number?
9 x 10 4
90,000 =

11. What is the Ordinary Number?
4 x 10 2
400 =

12. What is the Standard Form?2
500
5 x 10 =

13. What is the Standard Form?3
6,000
6 x 10 =

14. What is the Standard Form?4
90,000
9 x 10 =

15. What is the Standard Form?5
700,000
7 x 10 =