====== MA 01.0A.B.3 ====== ====Standard:==== 01.0A.B.3 Apply properties of operations as strategies to add and subtract. ---- ====Standard Unpacked:==== 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.) ---- ==== Lesson Plans: ==== ---- ==== Resources: ==== Good Projects here: Illustrative Mathematics https://www.illustrativemathematics.org/1 [[math_level_1|Back to Mathematics Level 1]]