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Name: ______________________ Class: __________________ M8-U6: HW #4 – Scientific Notation Date: __________________ Is each number written in scientific notation? If not, give a reason why it is not. 1. A horse-chestnut has a diameter of about 2 10 0 cm. ________________ ___________________________________ 2. The approximate wavelength of infrared light is 0.01 10 5 meter. ________________ ___________________________________ 3. Neptune is about 4.488 10 9 km from the sun. ________________ ___________________________________ 4. A football field (excluding end zones) is 10 101 yards long. ________________ ___________________________________ Writing a Number in Scientific Notation: 5. 456,000 _________________________ 6. 0.0000563 _____________________ 7. 00.0045032 ______________________ 8. 98,760,000 _______________________ 1 Writing a Number in Standard Form: 9. 6.7 10 3 _________________ 10. 9.32 10 7 ___________________ 11. 4.32 10 5 _________________ 12. 5 10 3 ___________________ Spiral: 13. Write 4 as an equivalent fraction: ___________________ 6 Tell whether each statement is correct. Show work to support your answer. 14. 3 5 7 4 3 12 15. 8 2 2 2 3 3 Rewrite each item as an equivalent expression in exponential notation. 16. 10 2 17. 18. Solve the following equation: 34x 8 26x 12 2 x7 x7