1 / 19

Positives (-) and Negatives (-)

Negative Integer : A number denoting the spaces going left, a number denoting the amount of money you owe someone. Positives (-) and Negatives (-). Positive Integer: A number representing spaces to the right on the number line; a number denoting the amount of money you have with you.

naida
Télécharger la présentation

Positives (-) and Negatives (-)

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. Negative Integer: A number denoting the spaces going left, a number denoting the amount of money you owe someone. Positives (-) and Negatives (-) Positive Integer: A number representing spaces to the right on the number line; a number denoting the amount of money you have with you.

  2. ADDING: Negative plus Negative = Negative ( - ) + ( - ) = - Ex: – 3 + (-4) = (go left on number line) – 3 – 4 = – 7 Ex: – m + (– 5m) + (-4m) = – m – 5m – 4m = – 10m

  3. ADDING: PositiveplusPositive = Positive ( + ) + ( + ) = + Ex: 3+ 4 = (Right on the number line) 3 +4 = 7 Ex: m+5m+(4m) = m+5m+4m = 10m

  4. ADDING: Positiveplus Negative = Bigger number sign ( + ) + ( - ) = + or-? Ex: 3+ (-4 ) = 3 - 4 = – 1 Ex: – 3 + 4 = 1

  5. SUBTRACTING: Negative minus Negative = Bigger number sign ( - ) - ( - ) = - or + ? Ex: – 3 - (-4) = – 3 + 4 = 1 Ex: – 5 - (-4) = – 5 + 4 = – 1 Ex: – m - (– 5m) - (-4m) = – m + 5m + 4m = – m + 9m = 8m

  6. SUBTRACTING: Positive minus Negative = Positive ( + ) - ( - ) = + Ex: 3 - ( - 4 ) = 3 + 4 = 7 Ex: m- (-5m) - (-4m) = m + 5m + 4m = 10m

  7. SUBTRACTING: Negative minusPositive = Negative ( - ) -( + ) = – Ex: – 3 - ( 4 ) = – 3 - 4 = – 7 Ex: – 5 - (+4) = – 5 - 4= – 9 Ex: – m -(5m) -(4m) = – m – 5m – 4m = –10m

  8. MULTIPLYING: Negative timesPositive = Negative ( - ) x( + ) = – Ex: – 3 ( 4 ) = ( – 3)(4) = – 12 Ex: (-5)4 = – 5 x 4 = – 20 Ex: (– m)5 = ( m)(-5)= –5m

  9. MULTIPLYING: Positive times Negative = Negative ( + )x ( - ) = – Ex: (3 )( - 4 ) = 3( - 4 ) = – 12 Ex: (5) (-4) = 5(- 4)= – 20 Ex: (m)(-5)= m(-5) = –5m

  10. MULTIPLYING: Positive timesPositive = Positive( + )x( + ) = + Ex: (3 )( 4 ) = 3( 4 ) = 12 Ex: (5)(4) = 5(4)= 20 Ex: (m)(5) = m(5) = 5m

  11. DIVIDING: = = + Ex: = 6 Ex: = 4 Ex: = 7m

  12. DIVIDING: = = – Ex: = -6 Ex: = -4 Ex: = -7m

  13. DIVIDING: = = – Ex: = -6 Ex: = -4 Ex: = -7m

  14. DIVIDING: = = + Ex: = 6 Ex: = 4 Ex: = 7m

  15. This properties do extend to equations. We use this whenever we are using the properties we have covered to solve for variables. Ex: – 2(x+ 3) = 15 Distribute the –2 – 2(x)+(-2)(3)= 15 Use properties of signs Now isolate the variable – 2x – 6 = 15 + 6 +6 Add to both sides of = – 2x= 21 Divide by -2 both sides x= -

  16. REMEMBER: Adding:(+) + (+)= positive (-) + (-) = negative (+) + (-) = Biggest number takes the sign. Subtracting:(+) - (+)= (+)- = Biggest number takes sign (-) - (-) = (-)+ = Biggest number takes sign (+) - (-) = (+) + = positive (-) – (+) = (-) - = negative

  17. REMEMBER: Multiplying:(+) ∙ (+)= positive (-) ∙ (-) = positive (+) ∙ (-) = Negative. Dividing:(+) / (+)= Positive (-) / (-) = Positive (+) / (-) = Negative (-) / (+) = Negative

  18. CLASS WORK: In Class: Roll the die Problems: 1 - ?

  19. HOMEWORK: Kuta Software Handout

More Related