How to calculate 328-76 + 24?

How to calculate 328-76 + 24?

328-76+24=326+2-76+24=326-76+2+24
Divide 328 into the form of 326 + 2, and then use the commutative law
(1) If you've learned negative numbers, it's easier to do the following:
The original formula = 326-76 + (2 + 24) = 326-76 + 26 = 326-50 = 276;
(2) If you haven't learned negative numbers, calculate them directly
The original formula is 326-76 + (2 + 24) = 326-76 + 26 = 250 + 26 = 276