1 / 14

Do Now Divide. 1. 24.5 ÷ 7 2. 50.4 ÷ 6 3. 19.2 ÷ (–2) 4. 128.1 ÷ 21

Dividing Decimals and Integers by Decimals. 3-5. Course 2. Do Now Divide. 1. 24.5 ÷ 7 2. 50.4 ÷ 6 3. 19.2 ÷ (–2) 4. 128.1 ÷ 21. 3.5. 8.4. –9.6. 6.1. Hwk: p 28. Dividing Decimals and Integers by Decimals. 3-5. Course 2.

ling
Download Presentation

Do Now Divide. 1. 24.5 ÷ 7 2. 50.4 ÷ 6 3. 19.2 ÷ (–2) 4. 128.1 ÷ 21

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Dividing Decimals and Integers by Decimals 3-5 Course 2 Do Now Divide. 1.24.5 ÷ 7 2. 50.4 ÷ 6 3. 19.2 ÷ (–2) 4. 128.1 ÷ 21 3.5 8.4 –9.6 6.1 Hwk: p 28

  2. Dividing Decimals and Integers by Decimals 3-5 Course 2 EQ How do I divide decimals and integers by decimals? M7N1.c Add, subtract, multiply, and divide positive and negative rational numbers; M7N1.d Solve problems using rational numbers

  3. Dividing Decimals and Integers by Decimals 3-5 Course 2 Additional Example 1A: Dividing Decimals by Decimals Divide. 8.28 ÷ 4.6 8.28 ÷ 4.6 = 82.8 ÷ 46 1. 8 ) 82.8 46 46 – 36 8 –36 8 0

  4. Dividing Decimals and Integers by Decimals 3-5 Course 2 Additional Example 1B: Dividing Decimals by Decimals Divide. 18.48 ÷ (–1.75) 18.48 ÷ (–1.75) = 1848 ÷ 175 1 0 .5 6 ) . 00 175 1848 –175 0 9 8 –87 5 10 50 –10 50 0 The signs are different. 18.48 ÷ (–1.75) = –10.56

  5. Dividing Decimals and Integers by Decimals 3-5 Course 2 Insert Lesson Title Here Check It Out: Example 1A Divide. 6.45 ÷ 0.5 6.45 ÷ 0.5 = 64.5 ÷ 5 1 2 9 . ) 5 64.5 5 – 14 –10 4 5 –4 5 0

  6. Dividing Decimals and Integers by Decimals 3-5 Course 2 Check It Out: Example 1B Divide. 16.48 ÷ (–2.06) 16.48 ÷ (–2.06) = 1648 ÷ (206) 8 ) 206 1,648 –1 648 0 16.48 ÷ (–2.06) = –8

  7. Dividing Decimals and Integers by Decimals 3-5 Course 2 Additional Example 2A: Dividing Integers by Decimals Divide. 4 ÷ 1.25 400 ÷ 125 4.00 ÷ 1.25 = . 3 2 ) 125 400 .0 –375 25 0 –25 0 0 Estimate 4 ÷ 1 = 4

  8. Dividing Decimals and Integers by Decimals 3-5 Course 2 Additional Example 2B:Dividing Integers by Decimals Divide. –24 ÷ (–2.5) –24.0 ÷ (–2.5) = –240 ÷ (–25) 9 6 . ) 0 240 . 25 – 225 0 15 – 15 0 0 Estimate –24 ÷ (–3) = 8

  9. Dividing Decimals and Integers by Decimals 3-5 Course 2 Check It Out: Example 2A Divide. 6 ÷ 1.25 600 ÷ 125 6.00 ÷ 1.25 = . 4 8 ) 125 600 .0 –500 100 0 –100 0 0 Estimate 6 ÷ 1 = 6

  10. Dividing Decimals and Integers by Decimals 3-5 Course 2 Check It Out: Example 2B Divide. –22 ÷ (–2.5) –22.0 ÷ (–2.5) = –220 ÷ (–25) 8 8 . ) 0 220 . 25 –200 0 20 –20 0 0 Estimate –21 ÷ (–3) = 7

  11. Dividing Decimals and Integers by Decimals 3-5 Course 2 Additional Example 3: Transportation Application Eric paid $229.25 to rent a car. The fee to rent the car was $32.75 per day. For how long did Eric rent the car? 229.25 ÷ 32.75 = 22,925 ÷ 3,275 7 ) 22,975 3,275 –22,975 0 Eric rented the car for 7 days.

  12. Dividing Decimals and Integers by Decimals 3-5 Helpful Hint To calculate miles per gallon, divide the number of miles driven by the number of gallons of gas used. Course 2 Insert Lesson Title Here Check It Out: Example 3 Jace took a trip in which he drove 350 miles. During the trip his truck used 12.5 gallons of gas. What was his truck’s gas mileage? 350.0 ÷ 12.5 = 3500 ÷ 125 2 8 ) 125 3500 –250 100 0 –1000 0 Jace’s truck’s gas mileage was 28 miles per gallon.

  13. Dividing Decimals and Integers by Decimals 3-5 Course 2 Insert Lesson Title Here You Try Divide. Estimate to check whether each answer is reasonable. 1. 78.2 ÷ 0.04 2. –9.72 ÷ 2.7 3. 18.88 ÷ 1.6 4. 19.5 ÷ 3.25 5. Jordan used 32.46 gallons of gas to drive his van 584.28 miles. How many miles did Jordan get per gallon? 1,995 –3.6 11.8 6 18

  14. You have two choices A: start on your homework quietly B: open textbook to page 172 and start working.

More Related