Copy of Scientific Notation MiniQuiz

6. Alexa used a microscope to measure the diameter of a hair. She found that the diameter of the hair was 0.000072 meter. How is this number written in scientific notation? A. 7.2 x 10 ❑ 4 B. 7.2 x 10 ❑ − 4 C. 7.2 x 10 ❑ 5 D. 7.2 x 10 ❑ − 5 7. Express 750 thousand in scientific notation. A. 750 x 10 ❑ 3 B. 75 x 10 ❑ 4 C. 7.5 x 10 ❑ 4 D. 7.5 x 10 ❑ 5 8. Express 3.2 × 10 ❑ − 8 in standard form. A. .0000000032 B. .000000032 C. 320,000,000 D. 3,200,000,000 9. Rewrite the number in scientific notation: 0.000492 A. 4.92 x 10 ❑ − 4 B. 492 x 10 ❑ − 6 C. 4.92 x 10 ❑ 4 D. 0.492 x 10 ❑ − 3 10. Which of the following shows 5,712,000,000 in scientific notation? A. 57.12 x 10 ❑ 9 B. 5.712 x 10 ❑ 9 C. 571.2 x 10 ❑ 9 D. 5712 x 10 ❑ 9