Loading…

Flash Player 9 (or above) is needed to view presentations.
We have detected that you do not have it on your computer. To install it, go here.

Like this presentation? Why not share!

Directed numbers

on

  • 546 views

For teaching and learning.

For teaching and learning.

Statistics

Views

Total Views
546
Views on SlideShare
545
Embed Views
1

Actions

Likes
0
Downloads
6
Comments
0

1 Embed 1

http://cea4026.1bestarinet.net 1

Accessibility

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Directed numbers Directed numbers Presentation Transcript

  • Directed NumbersObjective: Be able to addand subtract directednumbers.
  • First, you have to know the 8number line! 7 6 5 4 3 2 If you 1 remember 0 -1 what the -2 number line -3 -4 looks like -5 -6 you will find -7 this easy! -8 -9
  • Let’s look at a question Work out What does this mean?The first part tells +6 + -3 The lastyou where to start numberon the number tells youline. by how much. The symbols If they are the tell you what to same, you add. do. If they are different, you
  • Let’s do it 8 7 6 5 One! 4 Two! +6 + -3 3 2 Three! 1 0 -1 So there’s -2 your They are -3 answer, 3 -4 different, so -5Start here subtract… … this -6 much -7 -8 -9
  • +6 + -3 =3
  • Here’s another … 8 7 6 5 4 -4 - -9 3 2 1 0 -1 -2 They are the -3 -4 same, so we -5Start here add… … this -6 much -7 So there’s -8 your -9 answer, 5