Workbook Detail
Fact Family Add Sub Within 20 Easy — Set 3
Exercise 1
- OperationPair
- add-sub
- Triple
- 8
- 4
- 12
- Mode
- write_all
- Equations
- {"text":"8 + 4 = 12","parts":[8,"+",4,"=",12]}
- {"text":"4 + 8 = 12","parts":[4,"+",8,"=",12]}
- {"text":"12 - 8 = 4","parts":[12,"-",8,"=",4]}
- {"text":"12 - 4 = 8","parts":[12,"-",4,"=",8]}
Exercise 2
- OperationPair
- add-sub
- Triple
- 1
- 9
- 10
- Mode
- write_all
- Equations
- {"text":"1 + 9 = 10","parts":[1,"+",9,"=",10]}
- {"text":"9 + 1 = 10","parts":[9,"+",1,"=",10]}
- {"text":"10 - 1 = 9","parts":[10,"-",1,"=",9]}
- {"text":"10 - 9 = 1","parts":[10,"-",9,"=",1]}
Exercise 3
- OperationPair
- add-sub
- Triple
- 6
- 8
- 14
- Mode
- write_all
- Equations
- {"text":"6 + 8 = 14","parts":[6,"+",8,"=",14]}
- {"text":"8 + 6 = 14","parts":[8,"+",6,"=",14]}
- {"text":"14 - 6 = 8","parts":[14,"-",6,"=",8]}
- {"text":"14 - 8 = 6","parts":[14,"-",8,"=",6]}
Exercise 4
- OperationPair
- add-sub
- Triple
- 9
- 4
- 13
- Mode
- write_all
- Equations
- {"text":"9 + 4 = 13","parts":[9,"+",4,"=",13]}
- {"text":"4 + 9 = 13","parts":[4,"+",9,"=",13]}
- {"text":"13 - 9 = 4","parts":[13,"-",9,"=",4]}
- {"text":"13 - 4 = 9","parts":[13,"-",4,"=",9]}
Exercise 5
- OperationPair
- add-sub
- Triple
- 7
- 6
- 13
- Mode
- write_all
- Equations
- {"text":"7 + 6 = 13","parts":[7,"+",6,"=",13]}
- {"text":"6 + 7 = 13","parts":[6,"+",7,"=",13]}
- {"text":"13 - 7 = 6","parts":[13,"-",7,"=",6]}
- {"text":"13 - 6 = 7","parts":[13,"-",6,"=",7]}
Exercise 6
- OperationPair
- add-sub
- Triple
- 6
- 7
- 13
- Mode
- write_all
- Equations
- {"text":"6 + 7 = 13","parts":[6,"+",7,"=",13]}
- {"text":"7 + 6 = 13","parts":[7,"+",6,"=",13]}
- {"text":"13 - 6 = 7","parts":[13,"-",6,"=",7]}
- {"text":"13 - 7 = 6","parts":[13,"-",7,"=",6]}
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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