Question

How might you use the associative property to find the sum of 53 + 38+17 mentally (without writing anything down?)

Answer 1

The total is 108

Explanation:

If you won't or can't write anything down, start by adding the 53 and 17, which should be easiest to do.

That then gives you 70.

Then, add the 70 and 38.

Your total; 108