1. Lesson 2 LT: I can determine the number of significant figures when looking at a number.

2. Cool School Bus You have 5 minutes to answer the following question.

3. How many years old are you if you have lived 1 billion seconds?
5 minutes
How many years old are you if you have lived 1 billion seconds?

4. How many years old are you if you have lived 1 billion seconds?
4 minutes
How many years old are you if you have lived 1 billion seconds?

5. How many years old are you if you have lived 1 billion seconds?
3 minutes
How many years old are you if you have lived 1 billion seconds?

6. How many years old are you if you have lived 1 billion seconds?
2 minutes
How many years old are you if you have lived 1 billion seconds?

7. How many years old are you if you have lived 1 billion seconds?
1 minute
How many years old are you if you have lived 1 billion seconds?

8. 5 seconds

9. 4 seconds

10. 3 seconds

11. 2 seconds

12. 1 second

13. Time for Class!