Your SlideShare is downloading. ×
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Oct 22 Integers
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Oct 22 Integers

611

Published on

Published in: Education, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
611
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
15
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. October 22, 2008 Teacher Notes Subject: Maths Topic: Number operations Title: Addition of Integers Year Group(s): 7, 8 and 9 Curriculum-related themes: Non-specific Intended learning outcome(s) · Learn the rules for adding integers · Gain practice adding integers Recommended usage: Introduction / main activity How to use Notebook(TM) software Learn helpful tips and tricks for developing and presenting lesson activities. © 2004 SMART Technologies Inc. All rights reserved. For further information, please seecopyright notice.
  • 2. October 22, 2008 Addition of Integers Windows(R) operating system and Mac OS X operating system software Submitted by: Gerry-Lynn Borys Red Deer Catholic Regional Division: St.Patrick's Community School -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10
  • 3. October 22, 2008 You can use algebra tiles to add integers. means + 1 means -1
  • 4. October 22, 2008 Example =+1 = -2 This is the same as This is the same as saying saying (+3) + (-2) = +1 (+2) + (-4) = -2
  • 5. October 22, 2008 Zero principle The zero principle states that when you add two opposites, their sum is equal to zero. (+1) + (-1) = 0
  • 6. October 22, 2008 So, in our two examples left with left with -2 +1 =0 =0 =0 =0
  • 7. October 22, 2008 Use the yellow (positive) tiles and red (negative)tiles to add each pair of integers, then write the addition sentence for each. (+5) + (-4) (+3) + (-7) (-4) + (-3)
  • 8. October 22, 2008 Answers (+5) + (-4) (+3) + (-7) (-4) + (-3)
  • 9. October 22, 2008 You can also use a number line to add integers. + sign means move forward or to the right of zero - sign means move back or to the left of zero (+3) + (-2) Start at +3 and move back 2 spaces -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10
  • 10. October 22, 2008 Solve the following questions using the number line. (-3) + (-2) -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 (+5 ) + (-6) -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 (-7) + (+4) -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10
  • 11. October 22, 2008 Answers (-3) + (-2) -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 (+5 ) + (-6) -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 (-7) + (+4) -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10
  • 12. October 22, 2008 You can also add integers algebraically. Simply ignore the addition sign and do what the sign on the second integer tells you to do. Example (+4) + (-5) Ignore the addition sign and this question becomes 4 - 5 = -1
  • 13. October 22, 2008
  • 14. October 22, 2008
  • 15. October 22, 2008
  • 16. October 22, 2008 (+4) + (-3)= _____ +1 (-3) + (+6)= _____ +3 (+5) + (+2)= _____ +7 (-2) + (-5) = _____ -7 (-4) + (+2)= _____ -2

×