Workbook Detail
Fact Family Add Sub Within 20 Write All — Set 3
Exercise 1
- OperationPair
- add-sub
- Triple
- 18
- 8
- 26
- Mode
- write_all
- Equations
- {"text":"18 + 8 = 26","parts":[18,"+",8,"=",26]}
- {"text":"8 + 18 = 26","parts":[8,"+",18,"=",26]}
- {"text":"26 - 18 = 8","parts":[26,"-",18,"=",8]}
- {"text":"26 - 8 = 18","parts":[26,"-",8,"=",18]}
Exercise 2
- OperationPair
- add-sub
- Triple
- 14
- 13
- 27
- Mode
- write_all
- Equations
- {"text":"14 + 13 = 27","parts":[14,"+",13,"=",27]}
- {"text":"13 + 14 = 27","parts":[13,"+",14,"=",27]}
- {"text":"27 - 14 = 13","parts":[27,"-",14,"=",13]}
- {"text":"27 - 13 = 14","parts":[27,"-",13,"=",14]}
Exercise 3
- OperationPair
- add-sub
- Triple
- 5
- 14
- 19
- Mode
- write_all
- Equations
- {"text":"5 + 14 = 19","parts":[5,"+",14,"=",19]}
- {"text":"14 + 5 = 19","parts":[14,"+",5,"=",19]}
- {"text":"19 - 5 = 14","parts":[19,"-",5,"=",14]}
- {"text":"19 - 14 = 5","parts":[19,"-",14,"=",5]}
Exercise 4
- OperationPair
- add-sub
- Triple
- 13
- 15
- 28
- Mode
- write_all
- Equations
- {"text":"13 + 15 = 28","parts":[13,"+",15,"=",28]}
- {"text":"15 + 13 = 28","parts":[15,"+",13,"=",28]}
- {"text":"28 - 13 = 15","parts":[28,"-",13,"=",15]}
- {"text":"28 - 15 = 13","parts":[28,"-",15,"=",13]}
Exercise 5
- OperationPair
- add-sub
- Triple
- 2
- 11
- 13
- Mode
- write_all
- Equations
- {"text":"2 + 11 = 13","parts":[2,"+",11,"=",13]}
- {"text":"11 + 2 = 13","parts":[11,"+",2,"=",13]}
- {"text":"13 - 2 = 11","parts":[13,"-",2,"=",11]}
- {"text":"13 - 11 = 2","parts":[13,"-",11,"=",2]}
Exercise 6
- OperationPair
- add-sub
- Triple
- 8
- 3
- 11
- Mode
- write_all
- Equations
- {"text":"8 + 3 = 11","parts":[8,"+",3,"=",11]}
- {"text":"3 + 8 = 11","parts":[3,"+",8,"=",11]}
- {"text":"11 - 8 = 3","parts":[11,"-",8,"=",3]}
- {"text":"11 - 3 = 8","parts":[11,"-",3,"=",8]}
Teaching Notes
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