Workbook Detail
Fact Family Add Sub Within 20 Write All — Set 2
Exercise 1
- OperationPair
- add-sub
- Triple
- 1
- 12
- 13
- Mode
- write_all
- Equations
- {"text":"1 + 12 = 13","parts":[1,"+",12,"=",13]}
- {"text":"12 + 1 = 13","parts":[12,"+",1,"=",13]}
- {"text":"13 - 1 = 12","parts":[13,"-",1,"=",12]}
- {"text":"13 - 12 = 1","parts":[13,"-",12,"=",1]}
Exercise 2
- OperationPair
- add-sub
- Triple
- 15
- 7
- 22
- Mode
- write_all
- Equations
- {"text":"15 + 7 = 22","parts":[15,"+",7,"=",22]}
- {"text":"7 + 15 = 22","parts":[7,"+",15,"=",22]}
- {"text":"22 - 15 = 7","parts":[22,"-",15,"=",7]}
- {"text":"22 - 7 = 15","parts":[22,"-",7,"=",15]}
Exercise 3
- OperationPair
- add-sub
- Triple
- 3
- 19
- 22
- Mode
- write_all
- Equations
- {"text":"3 + 19 = 22","parts":[3,"+",19,"=",22]}
- {"text":"19 + 3 = 22","parts":[19,"+",3,"=",22]}
- {"text":"22 - 3 = 19","parts":[22,"-",3,"=",19]}
- {"text":"22 - 19 = 3","parts":[22,"-",19,"=",3]}
Exercise 4
- 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 5
- OperationPair
- add-sub
- Triple
- 3
- 1
- 4
- Mode
- write_all
- Equations
- {"text":"3 + 1 = 4","parts":[3,"+",1,"=",4]}
- {"text":"1 + 3 = 4","parts":[1,"+",3,"=",4]}
- {"text":"4 - 3 = 1","parts":[4,"-",3,"=",1]}
- {"text":"4 - 1 = 3","parts":[4,"-",1,"=",3]}
Exercise 6
- OperationPair
- add-sub
- Triple
- 18
- 18
- 36
- Mode
- write_all
- Equations
- {"text":"18 + 18 = 36","parts":[18,"+",18,"=",36]}
- {"text":"36 - 18 = 18","parts":[36,"-",18,"=",18]}
Teaching Notes
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