Workbook Detail
Fact Family Add Sub Within 20 Fill Blanks — Set 2
Exercise 1
- OperationPair
- add-sub
- Triple
- 19
- 10
- 29
- Mode
- fill_blanks
- Equations
- {"display":"__ + 10 = 29","blank":19,"blankPosition":0,"originalParts":[19,"+",10,"=",29]}
- {"display":"10 + __ = 29","blank":19,"blankPosition":2,"originalParts":[10,"+",19,"=",29]}
- {"display":"29 - 19 = __","blank":10,"blankPosition":4,"originalParts":[29,"-",19,"=",10]}
- {"display":"29 - __ = 19","blank":10,"blankPosition":2,"originalParts":[29,"-",10,"=",19]}
Exercise 2
- OperationPair
- add-sub
- Triple
- 13
- 17
- 30
- Mode
- fill_blanks
- Equations
- {"display":"13 + 17 = __","blank":30,"blankPosition":4,"originalParts":[13,"+",17,"=",30]}
- {"display":"17 + 13 = __","blank":30,"blankPosition":4,"originalParts":[17,"+",13,"=",30]}
- {"display":"__ - 13 = 17","blank":30,"blankPosition":0,"originalParts":[30,"-",13,"=",17]}
- {"display":"30 - 17 = __","blank":13,"blankPosition":4,"originalParts":[30,"-",17,"=",13]}
Exercise 3
- OperationPair
- add-sub
- Triple
- 5
- 7
- 12
- Mode
- fill_blanks
- Equations
- {"display":"5 + __ = 12","blank":7,"blankPosition":2,"originalParts":[5,"+",7,"=",12]}
- {"display":"__ + 5 = 12","blank":7,"blankPosition":0,"originalParts":[7,"+",5,"=",12]}
- {"display":"12 - __ = 7","blank":5,"blankPosition":2,"originalParts":[12,"-",5,"=",7]}
- {"display":"__ - 7 = 5","blank":12,"blankPosition":0,"originalParts":[12,"-",7,"=",5]}
Exercise 4
- OperationPair
- add-sub
- Triple
- 19
- 10
- 29
- Mode
- fill_blanks
- Equations
- {"display":"19 + __ = 29","blank":10,"blankPosition":2,"originalParts":[19,"+",10,"=",29]}
- {"display":"10 + 19 = __","blank":29,"blankPosition":4,"originalParts":[10,"+",19,"=",29]}
- {"display":"29 - __ = 10","blank":19,"blankPosition":2,"originalParts":[29,"-",19,"=",10]}
- {"display":"__ - 10 = 19","blank":29,"blankPosition":0,"originalParts":[29,"-",10,"=",19]}
Exercise 5
- OperationPair
- add-sub
- Triple
- 7
- 6
- 13
- Mode
- fill_blanks
- Equations
- {"display":"7 + __ = 13","blank":6,"blankPosition":2,"originalParts":[7,"+",6,"=",13]}
- {"display":"6 + __ = 13","blank":7,"blankPosition":2,"originalParts":[6,"+",7,"=",13]}
- {"display":"13 - __ = 6","blank":7,"blankPosition":2,"originalParts":[13,"-",7,"=",6]}
- {"display":"13 - __ = 7","blank":6,"blankPosition":2,"originalParts":[13,"-",6,"=",7]}
Exercise 6
- OperationPair
- add-sub
- Triple
- 19
- 3
- 22
- Mode
- fill_blanks
- Equations
- {"display":"19 + __ = 22","blank":3,"blankPosition":2,"originalParts":[19,"+",3,"=",22]}
- {"display":"3 + 19 = __","blank":22,"blankPosition":4,"originalParts":[3,"+",19,"=",22]}
- {"display":"22 - 19 = __","blank":3,"blankPosition":4,"originalParts":[22,"-",19,"=",3]}
- {"display":"__ - 3 = 19","blank":22,"blankPosition":0,"originalParts":[22,"-",3,"=",19]}
Teaching Notes
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Frequently Asked Questions
How do I use this Fact Family Add Sub Within 20 Fill Blanks Math Worksheet 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.