You seem to REALLY want to do addition before subtraction. They're actually just the opposites of the same operation. You do whichever you encounter FIRST working from left-to-right. Let's rewrite the last steps of that problem: 36 - 16 + 6 = (+36) + (-16) + (+6) Now what would you do first? Hopefully you chose (+36) + (-16) ....different signs -- subtract to find the difference: Now, solve this on your paper: 42 - 3(2 + 4) + 5 =
Order of Operations Automatic Flip-Through SLIDE SHOW Overview of the Order of Operations © 1992, 1999 Amby Duncan-Carr All rights reserved. |