Previous Standard
Apply properties of operations as strategies to add and subtract. Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)
Next Standard
Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
Worksheets
![1.oa.4 Worksheets - Subtraction Relative to Addition worksheet 1.oa.4 Worksheets - Subtraction Relative to Addition worksheet](/math/subtraction/subtraction relative to addition/english/thumb.png)
![1.oa.4 Worksheets - Subtraction Relative to Addition worksheet 1.oa.4 Worksheets - Subtraction Relative to Addition worksheet](/math/subtraction/subtraction relative to addition/english/thumb.png)