Apply the associative property of addition to find the sum. See Example.
240 + (60 + 93)
Example
Find the sum: 98 + (2 + 17)
Strategy We will use the associative property to group 2 with 98.
WHY It is helpful to regroup because 98 and 2 are a pair of numbers that are easily added.
Solution
We will write the steps of the solution in horizontal form.
Whenever we add 0 to a whole number, the number is unchanged. This property is called the addition property of 0.
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