Find the sum

Explanation

We will use the associative property to group 2 with 98.  It is helpful to regroup because 98 and 2 are a pair of numbers that are easily added.

Solution

• Use the associative property of addition to regroup the addends.
  • 98 + (2 + 17) = (98 + 2) + 17
• Do the addition within the parentheses first.
  • = 100 + 17
  • = 117

The answer is 117