1. 9/15/2014 1-1 A. Estimate Products What operation?

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

3. 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.

4. -8-8 -About 24 × 8 = 192 miles -The estimate is higher than the actual distance he traveled because 7.6 was rounded up.

5. 2.) 9.6 × 1.8 3.) 4.2 × 3.1 4.) 68.4 × 21.3 20 12 1,400

6. Exit Ticket

7. 1)A greyhound can travel 39.3 miles per hour. At this speed, about how far could a greyhound travel in 6.5 hours? 2)Suppose one U.S. dollar is equal to 5.3 Egyptian pounds. About how many Egyptian pounds would you receive for $48.50? 3)4.8 × 3.2 4) 5.81 × 4 5) 57.32 × 32 About 280 miles About 250 Egyptian pounds 1524 1,800

8. 9/15/2014 1-1 C. Multiply Decimals by Whole Numbers

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

10. Examples 1) 4 × 0.832) 3 × 14.2 3) 8 × 4.47 3.3242.635.76

11. Exit Ticket

12. 1)3 × 0.02 2)0.12 × 8 3)11 × 0.045 0.06 0.96 0.495

13. Ms. Meenan wants…. 1)A stand up paddle board ($594.15) Buy 2 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.

14. Homework Pg. 27 #10-20 Evens Pg. 34 #1-26 Evens Period F- Study Quiz Tuesday!