1. Using Standard Form to Write Large Numbers By www.2july.co.uk

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

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

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

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 = 1,000 x 3 = 10,000 x 7 = 100,000 x 9 = 200 3,000 70,000 900,000

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

7. Short Cut for Writing Large NumbersRemember! The index is the same as the number of zeros when using base 10. 6 x 10 2 = 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? 5 x 10 2 = 500

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

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

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