Discussion
3 – (23 – 2[3 – 16 ÷ 2]) =
*This question is included in Nova Math - Diagnostic/Review:, question #4
(A) | –15 |
(B) | ... |
(C) | ... |
(D) | ... |
(E) | ... |
(F) | ... |
The solution is
Posted: 06/08/2012 04:40
In this step (8-2[-5]) why do we multiply
-2 by -5?
Why not 8 by -5?
-2 by -5?
Why not 8 by -5?
Posted: 06/08/2012 10:45
Bobo, it's because the order of operations: parentheses, exponent, multiplication and division, then addition and subtraction. PEMDAS for short.