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Do Now

Do Now. The 4-by-100 meter relay is a track and field event involving four runners on each team. What is the combined time of Carter and Frank? How much faster did Powell run his leg of the race than Bolt? What is the combined time of all the runners?. DWP #1.

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Do Now

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  1. Do Now • The 4-by-100 meter relay is a track and field event involving four runners on each team. • What is the combined time of Carter and Frank? • How much faster did Powell run his leg of the race than Bolt? • What is the combined time of all the runners? DWP #1

  2. 9/16/2013 1-1 A. Estimate Products What operation?

  3. Remember…. Rounding 4 or less ≤ round DOWN 5 or greater ≥ round UP

  4. Example 1- The record for the greatest distance traveled on a skateboard in 24 hours was set by James Peters in 2007. He traveled about 7.6 miles per hour. • Round 7.6 to the nearest whole number. • Estimate how many miles James Peters traveled in 24 hours. • Is your estimate higher or lower that the actual distance he traveled? Explain.

  5. 8 • About 24 × 8 = 192 miles • The estimate is higher than the actual distance he traveled because 7.6 was rounded up.

  6. 20 2.) 9.6 × 1.8 3.) 4.2 × 3.1 4.) 68.4 × 21.3 12 1,400

  7. Exit Ticket

  8. A greyhound can travel 39.3 miles per hour. At this speed, about how far could a greyhound travel in 6.5 hours? • Suppose one U.S. dollar is equal to 5.3 Egyptian pounds. About how many Egyptian pounds would you receive for $48.50? • 4.8 × 3.2 4) 5.81 × 4 5) 57.32 × 32 About 280 miles About 250 Egyptian pounds 1,800 15 24

  9. 9/16/2013 1-1 C. Multiply Decimals by Whole Numbers

  10. Method: • “lasso” the decimals • Multiply as usual • Plug in the decimal at the end

  11. Examples 1) 4 × 0.83 2) 3 × 14.2 3) 8 × 4.47 3.32 42.6 35.76

  12. Exit Ticket

  13. 0.06 • 3 × 0.02 • 0.12 × 8 • 11 × 0.045 0.96 0.495

  14. Ms. Meenan wants…. • A stand up paddle board ($594.15) Buy 2 • A bag of potato chips ($3.99) Buy enough for the class 3) A bedazzled collar for Miss Dixie ($13.49) Buy enough for her dog pals… Kupper, Diesel, Bailey.

  15. Homework • Pg. 27 #10-20 Evens • Pg. 34 #1-26 Evens • Quiz corrections DUE 9/23

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