Workbook Detail
Fact Family Add Sub Within 20 Medium — Set 6
Exercise 1
- OperationPair
- add-sub
- Triple
- 5
- 4
- 9
- Mode
- write_all
- Equations
- {"text":"5 + 4 = 9","parts":[5,"+",4,"=",9]}
- {"text":"4 + 5 = 9","parts":[4,"+",5,"=",9]}
- {"text":"9 - 5 = 4","parts":[9,"-",5,"=",4]}
- {"text":"9 - 4 = 5","parts":[9,"-",4,"=",5]}
Exercise 2
- OperationPair
- add-sub
- Triple
- 5
- 4
- 9
- Mode
- write_all
- Equations
- {"text":"5 + 4 = 9","parts":[5,"+",4,"=",9]}
- {"text":"4 + 5 = 9","parts":[4,"+",5,"=",9]}
- {"text":"9 - 5 = 4","parts":[9,"-",5,"=",4]}
- {"text":"9 - 4 = 5","parts":[9,"-",4,"=",5]}
Exercise 3
- OperationPair
- add-sub
- Triple
- 10
- 6
- 16
- Mode
- write_all
- Equations
- {"text":"10 + 6 = 16","parts":[10,"+",6,"=",16]}
- {"text":"6 + 10 = 16","parts":[6,"+",10,"=",16]}
- {"text":"16 - 10 = 6","parts":[16,"-",10,"=",6]}
- {"text":"16 - 6 = 10","parts":[16,"-",6,"=",10]}
Exercise 4
- OperationPair
- add-sub
- Triple
- 4
- 7
- 11
- Mode
- write_all
- Equations
- {"text":"4 + 7 = 11","parts":[4,"+",7,"=",11]}
- {"text":"7 + 4 = 11","parts":[7,"+",4,"=",11]}
- {"text":"11 - 4 = 7","parts":[11,"-",4,"=",7]}
- {"text":"11 - 7 = 4","parts":[11,"-",7,"=",4]}
Exercise 5
- OperationPair
- add-sub
- Triple
- 10
- 6
- 16
- Mode
- write_all
- Equations
- {"text":"10 + 6 = 16","parts":[10,"+",6,"=",16]}
- {"text":"6 + 10 = 16","parts":[6,"+",10,"=",16]}
- {"text":"16 - 10 = 6","parts":[16,"-",10,"=",6]}
- {"text":"16 - 6 = 10","parts":[16,"-",6,"=",10]}
Exercise 6
- OperationPair
- add-sub
- Triple
- 6
- 2
- 8
- Mode
- write_all
- Equations
- {"text":"6 + 2 = 8","parts":[6,"+",2,"=",8]}
- {"text":"2 + 6 = 8","parts":[2,"+",6,"=",8]}
- {"text":"8 - 6 = 2","parts":[8,"-",6,"=",2]}
- {"text":"8 - 2 = 6","parts":[8,"-",2,"=",6]}
Teaching Notes
Practice fact family add sub within 20 with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
Frequently Asked Questions
How do I use this Fact Family Add Sub Within 20 Medium Worksheets worksheet?
Print the worksheet and complete the problems. Each set number generates a unique arrangement. Use the same set number for all students in a class for consistent assessment.
Is there an answer key?
Yes — every worksheet includes a complete answer key. Print it separately or view it on screen.