1 / 17

Rational Numbers Comparison and Ordering Lesson

Learn to compare and order rational numbers, including negative ones, and practice converting fractions to decimals. Practice exercises and examples provided for better understanding.

vernondavis
Download Presentation

Rational Numbers Comparison and Ordering Lesson

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. Transparency 2 Click the mouse button or press the Space Bar to display the answers.

  2. Splash Screen

  3. Example 2-3c Objective Compare and order rational numbers

  4. Example 2-3c Vocabulary No new vocabulary

  5. Example 2-3c Math Symbols < less than > greater than

  6. Lesson 2 Contents Example 1Compare Rational Numbers Example 2Compare Negative Rational Numbers Example 3Order Rational Numbers

  7. Replace with <, >, or to make a true sentence. ENTER ENTER 3 7 0.42857… 8 13 0.61538… Example 2-1a Write problem placing a circle between the numbers for the answer Using calculator, convert each fraction to a decimal Line decimals up 1/3

  8. Replace with <, >, or to make a true sentence. ENTER ENTER 3 7 0.42857… 8 13 0.61538… Example 2-1a Since whole number is zero in each compare the place value of the first digit to the right of the decimal They are not the same number so compare 4 and 6 Answer: 4 is less than 6 so is less than < 1/3

  9. Replace with <, >, or to make a true sentence. Example 2-1b Answer: 1/3

  10. Replace with <, >, or to make a true sentence. ENTER 3 4 - 6.75 Example 2-2a Write problem placing a circle between the numbers for the answer Using calculator, convert each fraction to a decimal - 6.7 - 6.70 Line decimals up remembering to include the whole numbers -6 Since the whole number is the same, and the number to the right of the decimal is the same compare the next place value to the right by annexing a zero 2/3

  11. Replace with <, >, or to make a true sentence. ENTER 3 4 - 6.75 Example 2-2a They are not the same number so compare 0 and 5 -5 is less than 0 so is less than -67 - 6.7 - 6.70 Remember to write the answer using the original numbers Answer: > 2/3

  12. Replace with <, >, or to make a true sentence. Example 2-2c Answer: 2/3

  13. Substance Density(g/cm3) aluminum 2.7 beryllium 1.87 ENTER ENTER ENTER brick 1 + 4 5 1.80 2 + 1 4 2.25 2 + 3 5 2.60 crown glass fused silica marble nylon 1.1 pyrex glass 2.32 rubber neoprene Example 2-3a CHEMISTRYThe values for the approximate densities of various substances are shown in the table. Order the densities from least to greatest. Write each fraction as a decimal. 3/3

  14. Substance Density(g/cm3) aluminum 2.7 beryllium 1.87 brick crown glass fused silica marble nylon 1.1 pyrex glass 2.32 rubber neoprene Example 2-3a Write all numbers in vertical order lining up the decimals and round to the hundredth place value 2.70 1.87 1.80 2.25 2.22 . . . 2.60 1.10 2.32 1.33 . . . 3/3

  15. Substance Density(g/cm3) aluminum 2.7 beryllium 1.87 brick crown glass fused silica marble nylon 1.1 pyrex glass 2.32 rubber neoprene Example 2-3a Order beginning with the smallest one’s place value which is 1 Next order the 2’s 2.70 1.87 1.80 2.25 2.22 . . . 2.60 Answer: 1.10 1.1, 1.3, , 1.87, 2.2, 2.32 , 2.32, , 2.7 1.33 . . . 3/3

  16. Coaster Ride Time (min) Big Dipper Double Loop 1.5 Mind Eraser 1.8 Serial Thriller X–Flight Example 2-3c * AMUSEMENT PARKSThe ride times for five amusement park attractions are shown in the table below. Order the lengths from least to greatest. Answer: 3/3

  17. End of Lesson 2 Assignment

More Related