kiana Posted June 14, 2011 Share Posted June 14, 2011 with more incorrect than correct answers in the votes. 1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+1x0 =? As of right now, there are about 850k votes for 0, 700k votes for 14 (correct), and 200k votes for 16. Make sure you get order of operations down! :D Quote Link to comment Share on other sites More sharing options...
KidsHappen Posted June 14, 2011 Share Posted June 14, 2011 I get 16. First multiply 1X0 = 0, then add all of the ones plus zero. There are 16 additional ones so 16. I don't even understand how someone would come up with 14. What happens to the two additional ones? :confused: Quote Link to comment Share on other sites More sharing options...
kiana Posted June 14, 2011 Author Share Posted June 14, 2011 There's a sneaky -1 in there. Quote Link to comment Share on other sites More sharing options...
regentrude Posted June 14, 2011 Share Posted June 14, 2011 I get 16. First multiply 1X0 = 0, then add all of the ones plus zero. There are 16 additional ones so 16. I don't even understand how someone would come up with 14. What happens to the two additional ones? :confused: there is a MINUS sign Quote Link to comment Share on other sites More sharing options...
theYoungerMrsWarde Posted June 14, 2011 Share Posted June 14, 2011 Isn't there a (can't spell it close enough for spell check to get) device to help you remember? (order of operations) I can't remember it :001_rolleyes: Quote Link to comment Share on other sites More sharing options...
kiana Posted June 14, 2011 Author Share Posted June 14, 2011 Mnemonic device: Please Excuse My Dear Aunt Sally, which means Parentheses, Exponents, Multiplication and Division, Addition and Subtraction -- or as I like to say, Please Exhume My Dead Aunt Sally. Also known in countries with British English as BIDMAS, which indicates Brackets, Indices, Division and Multiplication, Addition and Subtraction. Quote Link to comment Share on other sites More sharing options...
regentrude Posted June 14, 2011 Share Posted June 14, 2011 Isn't there a (can't spell it close enough for spell check to get) device to help you remember? (order of operations) I can't remember it :001_rolleyes: For order of operation? Yep: Please Excuse My Dear Aunt Sally Parentheses-Exponents- Multiplication-Division-Addition-Subtraction Quote Link to comment Share on other sites More sharing options...
angela in ohio Posted June 14, 2011 Share Posted June 14, 2011 As of right now, there are about 850k votes for 0, 700k votes for 14 (correct), and 200k votes for 16. :001_huh: Quote Link to comment Share on other sites More sharing options...
regentrude Posted June 14, 2011 Share Posted June 14, 2011 with more incorrect than correct answers in the votes. 1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+1x0 =? As of right now, there are about 850k votes for 0, 700k votes for 14 (correct), and 200k votes for 16. Which clearly shows that democracy is misplaced when it comes to math Quote Link to comment Share on other sites More sharing options...
KidsHappen Posted June 14, 2011 Share Posted June 14, 2011 There's a sneaky -1 in there. there is a MINUS sign Ah. Sneaky and proof of my inability to pay attention to details. :blush: Quote Link to comment Share on other sites More sharing options...
kiana Posted June 14, 2011 Author Share Posted June 14, 2011 Ah. Sneaky and proof of my inability to pay attention to details. :blush: At least you got the order of ops right -- there are a number of people on there arguing that 'order of operations doesn't apply when there are no parentheses' :D Quote Link to comment Share on other sites More sharing options...
Violet Crown Posted June 14, 2011 Share Posted June 14, 2011 But ... that mnemonic (which I'd never heard) gives the incorrect impression that multiplication has priority over division, and addition over subtraction, when in fact they are equivalent operations. I've found it works better to teach multiplication as repeated adding, and exponentiation as repeated multiplying; and also that division is multiplication by the reciprocal while subtraction is addition of the opposite. Learning those basic ideas makes order of operations intuitive. Quote Link to comment Share on other sites More sharing options...
angela in ohio Posted June 14, 2011 Share Posted June 14, 2011 But ... that mnemonic (which I'd never heard) gives the incorrect impression that multiplication has priority over division, and addition over subtraction, when in fact they are equivalent operations. I've found it works better to teach multiplication as repeated adding, and exponentiation as repeated multiplying; and also that division is multiplication by the reciprocal while subtraction is addition of the opposite. Learning those basic ideas makes order of operations intuitive. When you teach the mnemonic, you just teach them ("my dear" and "Aunt Sally") grouped. Quote Link to comment Share on other sites More sharing options...
Violet Crown Posted June 14, 2011 Share Posted June 14, 2011 When you teach the mnemonic, you just teach them ("my dear" and "Aunt Sally") grouped.Hmm. I think I'd still rather teach them that those operations are equivalent. But everyone's mileage varies. Quote Link to comment Share on other sites More sharing options...
angela in ohio Posted June 14, 2011 Share Posted June 14, 2011 Hmm. I think I'd still rather teach them that those operations are equivalent. But everyone's mileage varies. Right. That's why you group them. :) Quote Link to comment Share on other sites More sharing options...
WishboneDawn Posted June 14, 2011 Share Posted June 14, 2011 Ah. Sneaky and proof of my inability to pay attention to details. :blush: Don't feel bad. I had to carefully examine several times before I saw it. Quote Link to comment Share on other sites More sharing options...
Teachin'Mine Posted June 14, 2011 Share Posted June 14, 2011 Admittedly I missed the minus sign and got 16 too. :tongue_smilie: I'm so glad I'm long since done with standardized testing! :lol: Quote Link to comment Share on other sites More sharing options...
kiana Posted June 15, 2011 Author Share Posted June 15, 2011 And up to a million votes for 0, while only 800k for 14 :P Quote Link to comment Share on other sites More sharing options...
joannqn Posted June 15, 2011 Share Posted June 15, 2011 When you teach the mnemonic, you just teach them ("my dear" and "Aunt Sally") grouped. :iagree: Only I add that you need to do those from left to right. I learned Everyone Pleases My Dear Aunt Sally. Quote Link to comment Share on other sites More sharing options...
zaichiki Posted June 15, 2011 Share Posted June 15, 2011 Which clearly shows that democracy is misplaced when it comes to math :lol::lol::lol: Quote Link to comment Share on other sites More sharing options...
justasque Posted June 15, 2011 Share Posted June 15, 2011 I have them write it PE(MD)(AS), and emphasize the left to right. We also like to make up other phrases that go with the initials. Quote Link to comment Share on other sites More sharing options...
lovelaughs_times_three Posted June 15, 2011 Share Posted June 15, 2011 with more incorrect than correct answers in the votes. 1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+1x0 =? As of right now, there are about 850k votes for 0, 700k votes for 14 (correct), and 200k votes for 16. Make sure you get order of operations down! :D Wow! I got that wrong!!!! I thought it would be 0!! I'm sometimes embarrassed that I am the one teaching my kids! :tongue_smilie: Thanks for teaching me! I learned something tonight! Quote Link to comment Share on other sites More sharing options...
Guest Plecco5 Posted September 10, 2013 Share Posted September 10, 2013 No matter what you put before that "x 0 =", no matter how astronomically huge and no matter how many - signs or + signs or anything else..the answer will always be and without question ...0, Zero, Nada~. Quote Link to comment Share on other sites More sharing options...
quark Posted September 10, 2013 Share Posted September 10, 2013 No matter what you put before that "x 0 =", no matter how astronomically huge and no matter how many - signs or + signs or anything else..the answer will always be and without question ...0, Zero, Nada~. So (5+5) * 0 = 5 + 5 * 0 ? ETA: FWIW, I almost missed that -1 too. Fun, kiana! Thanks! Quote Link to comment Share on other sites More sharing options...
quark Posted September 10, 2013 Share Posted September 10, 2013 Mnemonic device: Please Excuse My Dear Aunt Sally, which means Parentheses, Exponents, Multiplication and Division, Addition and Subtraction -- or as I like to say, Please Exhume My Dead Aunt Sally. Also known in countries with British English as BIDMAS, which indicates Brackets, Indices, Division and Multiplication, Addition and Subtraction. In my country (a Commonwealth nation), it was BODMAS. The O was for "Order" I think? Confusing, but somehow, it worked. Quote Link to comment Share on other sites More sharing options...
quark Posted September 10, 2013 Share Posted September 10, 2013 Wow! I got that wrong!!!! I thought it would be 0!! I'm sometimes embarrassed that I am the one teaching my kids! :tongue_smilie: Thanks for teaching me! I learned something tonight! Happens to me too often to count. Luckily, the kid is sharper than I am. Quote Link to comment Share on other sites More sharing options...
Spy Car Posted September 10, 2013 Share Posted September 10, 2013 No matter what you put before that "x 0 =", no matter how astronomically huge and no matter how many - signs or + signs or anything else..the answer will always be and without question ...0, Zero, Nada~. Fail. Bill Quote Link to comment Share on other sites More sharing options...
regentrude Posted September 11, 2013 Share Posted September 11, 2013 No matter what you put before that "x 0 =", no matter how astronomically huge and no matter how many - signs or + signs or anything else..the answer will always be and without question ...0, Zero, Nada~. First post - and already an epic fail. Please review elementary math. Quote Link to comment Share on other sites More sharing options...
abba12 Posted September 11, 2013 Share Posted September 11, 2013 No matter what you put before that "x 0 =", no matter how astronomically huge and no matter how many - signs or + signs or anything else..the answer will always be and without question ...0, Zero, Nada~. Please be trolling. Thanks I completely missed the minus sign, that annoys me! I am visually impaired though, so at least I have an excuse :P I love seeing people argue about incorrect math facts on these things that get passed around. I've seen it a few times. Also it was BOMDAS here, the O stood for over. I don't know if they were telling us brackets go over the rest, or the numbers over the other numbers (to the power of, etc) or what it actually meant. But I do know my order of operations! Quote Link to comment Share on other sites More sharing options...
regentrude Posted September 11, 2013 Share Posted September 11, 2013 We have a great mnemonic back home that does not have the issues PEMDAS has, namely suggesting that multiplication ranks before division and addition before subtraction. We write multiplication by a dot and division by a colon (i.e. two dots above each other). Plus and minus are + and -, made up of lines. The mnemonic kids get taught in schools is: "dot operations precede line operations". Simple. Quote Link to comment Share on other sites More sharing options...
kiwik Posted September 11, 2013 Share Posted September 11, 2013 In my country (a Commonwealth nation), it was BODMAS. The O was for "Order" I think? Confusing, but somehow, it worked. In New Zealand it is BEDMAS, brackets, exponents, div&mult, add&sub Quote Link to comment Share on other sites More sharing options...
quark Posted September 11, 2013 Share Posted September 11, 2013 In New Zealand it is BEDMAS, brackets, exponents, div&mult, add&sub Definitely makes more sense to me than BODMAS. :) Quote Link to comment Share on other sites More sharing options...
Forgiven Posted September 11, 2013 Share Posted September 11, 2013 I got 14...I can see how some people would miss the minus sign in there... Quote Link to comment Share on other sites More sharing options...
Sarah CB Posted September 11, 2013 Share Posted September 11, 2013 In New Zealand it is BEDMAS, brackets, exponents, div&mult, add&sub I'm in Canada and I learned it as BEDMAS. Quote Link to comment Share on other sites More sharing options...
fraidycat Posted September 12, 2013 Share Posted September 12, 2013 I don't remember learning any mnemonic device for the order of operations. I first learned one using MM to teach DD. We just had to know it, without helpers, I guess. ;) Quote Link to comment Share on other sites More sharing options...
Stratford Posted September 12, 2013 Share Posted September 12, 2013 Please don't let my children think that answers to math problems can be put to a vote.... I got 14. So did my DS (thankfully, as we just reviewed order of operations yesterday. At least Aunt Sally stuck in his head for 24 hours.) Quote Link to comment Share on other sites More sharing options...
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