Consider the expression $\left(56 · 25\right) · 4$.

1. How can regrouping the numbers in this expression make it easier to simplify? Rewrite the expression and simplify it.

   Hint (a):

   It may be easier to find the product of $25$ and $4$ rather than that of $56$ and $25$.

   Step 1(a):

   $\left(56\right) \left(25·4\right)$

   Step 2(a):

   $\left(56\right) \left(100\right)$

   Answer (a):

   $5600$

2. What property did you use to rewrite the expression?

   Hint (b):

   Which property allows you to move around the parentheses of terms that are multiplied?

   Answer (b):

   The associative property of multiplication.