1 / 13

Understanding how addition and subtraction relate to one another. SOL 2.10

Understanding how addition and subtraction relate to one another. SOL 2.10. Grade 2 Created by; Kim Smith. 25. For each addition fact there is a related subtraction fact?. No I don’t know Who cares Yes. 25. When determining a missing number do we have to add or subtract?. No Yes

garvey
Télécharger la présentation

Understanding how addition and subtraction relate to one another. SOL 2.10

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. Understanding how addition and subtraction relate to one another.SOL 2.10 Grade 2 Created by; Kim Smith

  2. 25 For each addition fact there is a related subtraction fact? • No • I don’t know • Who cares • Yes

  3. 25 When determining a missing number do we have to add or subtract? • No • Yes • I don’t know • Maybe

  4. 25 What are the missing numbers in this sentence?3+__=5 or __+2=5 • 3,1 • 2,3 • 1,3 • 5,5

  5. 25 What are the missing numbers in this sentence?5-__=3 or 5-2=__ • 3,3 • 1,1 • 2,3 • 3,2

  6. 25 What are the missing numbers in this sentence?6+__=10 or __+6=10 • 3,3 • 2,2 • 4,4 • 6,6

  7. 25 What are the missing numbers in this sentence?8-__=2 or 8-6=___ • 6,2 • 3,1 • 8,8 • 8,2

  8. 25 What are the missing numbers in this sentence?5-__=1 or 4+1=__ • 4,5 • 3,2 • 3,3 • 4,4

  9. 25 What are the related facts for this addition problem?3 + 4 =7 • 7-2=5 and 7-5=2 • 7-3=4 and 7-4=3 • 7-6=1 and 7-1=6 • 3-4=7 and 4-3=7

  10. 25 What are the related facts for this addition problem?6+5=11 • 11-6=6, 11+5=16 • 11-5=6, 11-6=5 • 11+11=22, 11+22=33 • 11-5=6, 11-6=6

  11. 25 What are the related facts for this subtraction problem?15-6=9 • 9+6=15, 15-9=6 • 15-6=9, 15+6=21 • 15-9=6, 15-6=9 • 15+15=6, 15+15=30

  12. 25 What are fact families? • When all the numbers are related • When all the numbers are different • When you only use addition • When you only use subtraction

  13. 25 What are the fact families for10+3? • 10+3=13,3+10=13, 13-10=3,13-3=10 • 10+3=10,10+3=10,10-3=7, 10-7=3

More Related