Mathematics (2019) Grade(s): 1
MA19.1.6d
Demonstrate fluency with addition and subtraction facts with sums or differences to 10 by using the relationship between addition and subtraction.
Demonstrate fluency with addition and subtraction facts with sums or differences to 10 by using the relationship between addition and subtraction.
COS Examples
Example: Knowing that 8 + 4 = 12, one knows 12 - 8 = 4.
