Question

Samantha had to add this group of numbers (47 + 56 + 53), but she wanted to add them as quickly and as easily as possible. Here is how she decided to add the numbers: 47 + 56 + 53 = (47 + 53) + 56 = 100 + 56 = 156. Which number property allowed her to add the numbers in this way?

Answer 1

she used the associative property of addition

it allows you to group the numbers in any way you want and still get the same answer