Workbook Detail
Fact Family Add Sub Within 20 Write All — Set 8
Exercise 1
- OperationPair
- add-sub
- Triple
- 13
- 5
- 18
- Mode
- write_all
- Equations
- {"text":"13 + 5 = 18","parts":[13,"+",5,"=",18]}
- {"text":"5 + 13 = 18","parts":[5,"+",13,"=",18]}
- {"text":"18 - 13 = 5","parts":[18,"-",13,"=",5]}
- {"text":"18 - 5 = 13","parts":[18,"-",5,"=",13]}
Exercise 2
- OperationPair
- add-sub
- Triple
- 11
- 12
- 23
- Mode
- write_all
- Equations
- {"text":"11 + 12 = 23","parts":[11,"+",12,"=",23]}
- {"text":"12 + 11 = 23","parts":[12,"+",11,"=",23]}
- {"text":"23 - 11 = 12","parts":[23,"-",11,"=",12]}
- {"text":"23 - 12 = 11","parts":[23,"-",12,"=",11]}
Exercise 3
- OperationPair
- add-sub
- Triple
- 1
- 19
- 20
- Mode
- write_all
- Equations
- {"text":"1 + 19 = 20","parts":[1,"+",19,"=",20]}
- {"text":"19 + 1 = 20","parts":[19,"+",1,"=",20]}
- {"text":"20 - 1 = 19","parts":[20,"-",1,"=",19]}
- {"text":"20 - 19 = 1","parts":[20,"-",19,"=",1]}
Exercise 4
- OperationPair
- add-sub
- Triple
- 2
- 14
- 16
- Mode
- write_all
- Equations
- {"text":"2 + 14 = 16","parts":[2,"+",14,"=",16]}
- {"text":"14 + 2 = 16","parts":[14,"+",2,"=",16]}
- {"text":"16 - 2 = 14","parts":[16,"-",2,"=",14]}
- {"text":"16 - 14 = 2","parts":[16,"-",14,"=",2]}
Exercise 5
- OperationPair
- add-sub
- Triple
- 5
- 2
- 7
- Mode
- write_all
- Equations
- {"text":"5 + 2 = 7","parts":[5,"+",2,"=",7]}
- {"text":"2 + 5 = 7","parts":[2,"+",5,"=",7]}
- {"text":"7 - 5 = 2","parts":[7,"-",5,"=",2]}
- {"text":"7 - 2 = 5","parts":[7,"-",2,"=",5]}
Exercise 6
- OperationPair
- add-sub
- Triple
- 16
- 20
- 36
- Mode
- write_all
- Equations
- {"text":"16 + 20 = 36","parts":[16,"+",20,"=",36]}
- {"text":"20 + 16 = 36","parts":[20,"+",16,"=",36]}
- {"text":"36 - 16 = 20","parts":[36,"-",16,"=",20]}
- {"text":"36 - 20 = 16","parts":[36,"-",20,"=",16]}
Teaching Notes
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