ForeverFamily Posted January 4, 2017 Share Posted January 4, 2017 Sorry my morning pregnant brain is not working well right now. :) This is from the Miquon Red book (E-31) 3+3-2+2=? Both my daughter and I automatically solved it like this... 3+3=6. 2+2=4. So 6-4=2 But wouldn't the order of operations say that it needs to be solved like this... 3+3=6. Then 6-2=4. Then 4+2=6 Just want to make sure before I correct her. I can later dig through my olders math books to check if needed, but I just wanted to double check with you guys. Apparently my mind isn't working well enough to teach math today, lol. At least today is mostly review. :) Quote Link to comment Share on other sites More sharing options...
wendyroo Posted January 4, 2017 Share Posted January 4, 2017 Correct. The answer is 6. All addition and subtraction operations are worked sequentially left to right. Wendy 1 Quote Link to comment Share on other sites More sharing options...
fralala Posted January 4, 2017 Share Posted January 4, 2017 (edited) But wouldn't the order of operations say that it needs to be solved like this... 3+3=6. Then 6-2=4. Then 4+2=6 Just want to make sure before I correct her. I can later dig through my olders math books to check if needed, but I just wanted to double check with you guys. Apparently my mind isn't working well enough to teach math today, lol. At least today is mostly review. :) Yes, your pregnant brain is right! Left to right with addition and subtraction, since you don't have any parentheses. ETA: I think the quick "automatic" way I'd explain to my child is that you'd quickly see the -2 + 2 at the end cancel each other out, and just have to compute the 3+3. Edited January 4, 2017 by fralala 1 Quote Link to comment Share on other sites More sharing options...
ForeverFamily Posted January 4, 2017 Author Share Posted January 4, 2017 Thanks guys! :) Quote Link to comment Share on other sites More sharing options...
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