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# Day 9 compare sci not

## on Oct 26, 2010

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## Day 9 compare sci notDocument Transcript

• AIM: Comparing Numbers In Scientific Notation Do Now 1
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• Mercury 5.7 X 107 miles Venus 8.2 X 107 miles Earth 9.3 X 107 miles Mars 1.4171 X 108 miles Jupiter 3.7 X 108 miles Saturn 7.44 X 108 miles Uranus 1.607 X 109 miles Neptune 2.796 X 109 miles 4
• Think-Pair-Share Activity: 1.) How can we determine if 3.45 X 105 is greater than 3.54 X 105? 2.) How can we determine if 5.13 X 10-3 is greater than 5.13 X 10-5? ­10 ­9 ­8 ­7 ­6 ­5 ­4 ­3 ­2 ­1 0 1 2 3 4 5 6 7 8 9 10 5
• 3.) Compare the numbers. Write >, < , or = a.) 3.6 X 106 < 3.65 X 106 b.) 2.0 X 10-4 < 2.01 X 10-3 c.) 8.231 X 107 < 8.321 X 109 d.) 3.62 X 10-5 < 3.621 X 10-4 6
• 4.) Order the following numbers written in scientific notation from least to greatest. a.) 6.2 X 107 , 6.12 X 104 , 6.2 X 10 11 6.12 X 104 6.2 X 107 6.2 X 1011 8 b.) 6.4 X 108 , 3.12 X 105 , 5.8 X 10 7
• ­10 ­9 ­8 ­7 ­6 ­5 ­4 ­3 ­2 ­1 0 1 2 3 4 5 6 7 8 9 10 c.) 8.0 X 10-9 , 1.47 X 10-7 , 2.2 X 10-8 d.) 2.5X 10-4 , 1.9 X 10-3 , 2.55 X 10-4 2.5X 10-4 2.55 X 10-4 1.9 X 10-3 8
• Extra Practice 9
• 7.) MULTIPLE CHOICE: China‛s population in 2001 was approximately 1,273,000,000. Mexico‛s population for the same year was about 1.02 X 108. How much greater was China‛s population than Mexico‛s? SHOW ALL WORK! A.) 1,375,000,000 B.) 1,274,020,000 C.) 1,171,000,000 D.) 102,000,000 10
• Forward 11
• Back 12
• BEFORE YOU LEAVE: Answer the following question in a complete sentence. 1.) Alpha Centauri is 4.07 X 1013 kilometers away from our solar system. Sirius is about 8.13 X 1013 kilometers away from our solar system. Which star is closer to our solar system? Explain your answer. Alpha Sirius Centauri 13
• BEFORE YOU LEAVE: Answer the following question in a complete sentence. 2.) Alpha Centauri is 4.07 X 1013 kilometers away from our solar system. Capella is about 3.88 X 1014 kilometers away from our solar system. Which star is closer to our solar system? Explain your answer. Alpha Capella Centauri 14
• Mr. Tjersland's Math 7 Homework: Homework Sheet 15
• AIM: Comparing Numbers In Scientific Notation Jupiter 3.7 X 108 Mercury 5.7 X 107 miles miles 9 Venus 8.2 X 107 Uranus 1.607 X 10 miles miles Mars 1.4171 X 108 Neptune 2.796 X 109 miles miles Saturn 7.44 X 108 Earth 9.3 X 107 miles miles 16