Respuesta :

Since you are estimating, or guessing, you would round the number. I am rounding it to the thousands.

324,867 would round up to 325,000.
6,233 would round down to 6,000.

Now add the two.
325,000
+  6,000

The answer is 331,000.

Thanks,
Whiiz
I would round to the greatest value in each number. 300,000+6,000=306,000