Which Standard for Mathematical Practice is involved when a student recognizes that (x+3)(x-5)=(x-5)(x+3)for the same reason that 7 ×3=3 ×7?
A)SMP #1: Make sense of problems.
B)SMP #3: Reason abstractly.
C)SMP #4: Model with mathematics.
D)SMP #6: Attend to precision.
E)SMP #7: Make use of structure.

Question

Quizplus · Accepted Answer

This involves SMP #7: Make use of structure, as the student is recognizing the commutative property of multiplication, which is a structural property of arithmetic and algebra.

Which Standard for Mathematical Practice Is Involved When a Student