Workbook Detail
Fact Family Add Sub Within 20 Expert — Set 1
Exercise 1
- 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 2
- OperationPair
- add-sub
- Triple
- 2
- 10
- 12
- Mode
- write_all
- Equations
- {"text":"2 + 10 = 12","parts":[2,"+",10,"=",12]}
- {"text":"10 + 2 = 12","parts":[10,"+",2,"=",12]}
- {"text":"12 - 2 = 10","parts":[12,"-",2,"=",10]}
- {"text":"12 - 10 = 2","parts":[12,"-",10,"=",2]}
Exercise 3
- OperationPair
- add-sub
- Triple
- 9
- 7
- 16
- Mode
- write_all
- Equations
- {"text":"9 + 7 = 16","parts":[9,"+",7,"=",16]}
- {"text":"7 + 9 = 16","parts":[7,"+",9,"=",16]}
- {"text":"16 - 9 = 7","parts":[16,"-",9,"=",7]}
- {"text":"16 - 7 = 9","parts":[16,"-",7,"=",9]}
Exercise 4
- OperationPair
- add-sub
- Triple
- 2
- 8
- 10
- Mode
- write_all
- Equations
- {"text":"2 + 8 = 10","parts":[2,"+",8,"=",10]}
- {"text":"8 + 2 = 10","parts":[8,"+",2,"=",10]}
- {"text":"10 - 2 = 8","parts":[10,"-",2,"=",8]}
- {"text":"10 - 8 = 2","parts":[10,"-",8,"=",2]}
Exercise 5
- OperationPair
- add-sub
- Triple
- 6
- 5
- 11
- Mode
- write_all
- Equations
- {"text":"6 + 5 = 11","parts":[6,"+",5,"=",11]}
- {"text":"5 + 6 = 11","parts":[5,"+",6,"=",11]}
- {"text":"11 - 6 = 5","parts":[11,"-",6,"=",5]}
- {"text":"11 - 5 = 6","parts":[11,"-",5,"=",6]}
Exercise 6
- OperationPair
- add-sub
- Triple
- 3
- 5
- 8
- Mode
- write_all
- Equations
- {"text":"3 + 5 = 8","parts":[3,"+",5,"=",8]}
- {"text":"5 + 3 = 8","parts":[5,"+",3,"=",8]}
- {"text":"8 - 3 = 5","parts":[8,"-",3,"=",5]}
- {"text":"8 - 5 = 3","parts":[8,"-",5,"=",3]}
Teaching Notes
Practice fact family add sub within 20 with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
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