1 / 11

2.1 Integers and absolute value

2.1 Integers and absolute value. Definitions. Integers: positive/negative whole numbers. Negative integers: integers less than zero. Larger neg. #, smaller amount Positive integers: integers more than zero. Larger pos. #, larger amount Zero neither positive or negative.

xanti
Download Presentation

2.1 Integers and absolute value

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. 2.1 Integers and absolute value

  2. Definitions • Integers: positive/negative whole numbers. • Negative integers: integers less than zero. • Larger neg. #, smaller amount • Positive integers: integers more than zero. • Larger pos. #, larger amount • Zero neither positive or negative. • From the list which ones are integers. • 3/4, 5, -26, .54

  3. 5, 4.5, 6/7, 23, -8 4, 2/3, 8.9, -32, 534, 0.3 Write Integers. Loss of 5yds 22 below zero Increase of 45% Deposit of $60 Which Numbers below are integers?

  4. Grade lowered by 8pts The temperature fell 4 degrees Gained $4000 in stock market Loss of 10yds 23 above zero Increase of 45% Write integer for situation?

  5. Definitions • Coordinate: point on line goes with number. Order using number line 2, -5, 8, 10, 9, -8, -1 -10 -5 0 5 10 15

  6. Order by using number line. 8, 5, -11, 0, -3 -15 -10 -5 0 5 10 Order the following numbers from least to greatest. -14, 11, -12, 7, -9 -15 -10 -5 0 5 10 Student Example

  7. Absolute value: distance from zero on a number line. Uses l n l symbols Ex: l 8 l Final answer positive! Ex: l -9 l = 9 Find absolute value. l 98 l = l -6 l = l -11 l = Absolute Values

  8. l 100 l - l 102 l l -12 l l 78 l - l 173 l l 214 l l -131 l l 65 l Student Examplesstate the absolute values

  9. Will do these all year long!!!! To solve, substitute number for each variable. Examples: Solve when x = -5 -x 12 – l x l - l x l variable expressions

  10. Solve when x = 6 l x l + 9 5 l x l 36 / l x l Solve when x = -3 -x – 2 l x l – 1 l x l Student Examples

  11. Wrap up • Questions/Comments Ic: Project Hw: wkbk. Pg. 13

More Related