Workbook Detail
Fact Family Mixed Within 20 Write All — Set 4
Exercise 1
- OperationPair
- add-sub
- Triple
- 5
- 5
- 10
- Mode
- write_all
- Equations
- {"text":"5 + 5 = 10","parts":[5,"+",5,"=",10]}
- {"text":"10 - 5 = 5","parts":[10,"-",5,"=",5]}
Exercise 2
- OperationPair
- add-sub
- Triple
- 18
- 13
- 31
- Mode
- write_all
- Equations
- {"text":"18 + 13 = 31","parts":[18,"+",13,"=",31]}
- {"text":"13 + 18 = 31","parts":[13,"+",18,"=",31]}
- {"text":"31 - 18 = 13","parts":[31,"-",18,"=",13]}
- {"text":"31 - 13 = 18","parts":[31,"-",13,"=",18]}
Exercise 3
- OperationPair
- add-sub
- Triple
- 17
- 16
- 33
- Mode
- write_all
- Equations
- {"text":"17 + 16 = 33","parts":[17,"+",16,"=",33]}
- {"text":"16 + 17 = 33","parts":[16,"+",17,"=",33]}
- {"text":"33 - 17 = 16","parts":[33,"-",17,"=",16]}
- {"text":"33 - 16 = 17","parts":[33,"-",16,"=",17]}
Exercise 4
- OperationPair
- add-sub
- Triple
- 3
- 20
- 23
- Mode
- write_all
- Equations
- {"text":"3 + 20 = 23","parts":[3,"+",20,"=",23]}
- {"text":"20 + 3 = 23","parts":[20,"+",3,"=",23]}
- {"text":"23 - 3 = 20","parts":[23,"-",3,"=",20]}
- {"text":"23 - 20 = 3","parts":[23,"-",20,"=",3]}
Exercise 5
- OperationPair
- add-sub
- Triple
- 2
- 9
- 11
- Mode
- write_all
- Equations
- {"text":"2 + 9 = 11","parts":[2,"+",9,"=",11]}
- {"text":"9 + 2 = 11","parts":[9,"+",2,"=",11]}
- {"text":"11 - 2 = 9","parts":[11,"-",2,"=",9]}
- {"text":"11 - 9 = 2","parts":[11,"-",9,"=",2]}
Exercise 6
- OperationPair
- add-sub
- Triple
- 13
- 1
- 14
- Mode
- write_all
- Equations
- {"text":"13 + 1 = 14","parts":[13,"+",1,"=",14]}
- {"text":"1 + 13 = 14","parts":[1,"+",13,"=",14]}
- {"text":"14 - 13 = 1","parts":[14,"-",13,"=",1]}
- {"text":"14 - 1 = 13","parts":[14,"-",1,"=",13]}
Teaching Notes
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