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Preparatory Lesson Three A. Numbers. Listen to the tape and write down the numbers. Please use “,” to divide the long numbers. (eg. 158,020) 1. ________ 2. ________ 3. ________ 4. ________ 5. ________ 6. ________ 7. ________ 8. ________ 9. ________ 10. ________ 11. ________ 12. ________ 13. ________ 14. ________ 15. ________ 16. ________ 17. ________ 18. ________