The Hallucinating Goose Posted December 17, 2023 Share Posted December 17, 2023 If you work out this maths problem, what answer do you get? 8 - 8 x 8 + 8 I don't know if maths is taught differently these days but apparently the answer I get is not correct. Link to comment Share on other sites More sharing options...
Sidi Fidi Gold Posted December 17, 2023 Share Posted December 17, 2023 Maths was never my strong point but I got 8 3 1 Link to comment Share on other sites More sharing options...
Sidi Fidi Gold Posted December 17, 2023 Share Posted December 17, 2023 9 minutes ago, Sidi Fidi Gold said: Maths was never my strong point but I got 8 I've noticed I got a like, I don't know if that's because I got the answer right or because I was brave enough to make a fool of myself Anyway. my working out was 8-8 = 0 0x8 =0 0+8 = 8 Link to comment Share on other sites More sharing options...
Maximus Decimus Posted December 17, 2023 Share Posted December 17, 2023 -48. BIDMAS 1 1 A Widnesian in Ireland blog What is the best system for Super League? An honest appraisal Link to comment Share on other sites More sharing options...
Farmduck Posted December 17, 2023 Share Posted December 17, 2023 I get -48. (I actually got 84- but that's just the Coriolis Effect) Link to comment Share on other sites More sharing options...
JohnM Posted December 17, 2023 Share Posted December 17, 2023 1 hour ago, The Hallucinating Goose said: If you work out this maths problem, what answer do you get? 8 - 8 x 8 + 8 I don't know if maths is taught differently these days but apparently the answer I get is not correct. 8-64-88 8-64-8=-56-8 =-48 Link to comment Share on other sites More sharing options...
The Hallucinating Goose Posted December 17, 2023 Author Share Posted December 17, 2023 1 hour ago, Sidi Fidi Gold said: Maths was never my strong point but I got 8 Right, 8 is what I get from doing it exactly the same way you did it. Like yourself, I was never very good at maths. Can someone please explain to me, as simply as possible, why the answer is -48? Link to comment Share on other sites More sharing options...
glossop saint Posted December 18, 2023 Share Posted December 18, 2023 7 hours ago, The Hallucinating Goose said: Right, 8 is what I get from doing it exactly the same way you did it. Like yourself, I was never very good at maths. Can someone please explain to me, as simply as possible, why the answer is -48? Maximus mentioned BIDMAS above. Also known as BODMAS. It helps you remember which order to do the separate calculations in. Brackets, operations or indices (any squaring or cubing etc), division, multiplication, addition, subtraction. Link to comment Share on other sites More sharing options...
The Hallucinating Goose Posted December 18, 2023 Author Share Posted December 18, 2023 27 minutes ago, glossop saint said: Maximus mentioned BIDMAS above. Also known as BODMAS. It helps you remember which order to do the separate calculations in. Brackets, operations or indices (any squaring or cubing etc), division, multiplication, addition, subtraction. I was always taught you did the calculations in brackets if there is any and then do the rest of the problem in order as it is written. So if the 8 x 8 was in brackets you would get -48 but it isn't in brackets here so, like I say, I was taught you just did the separate calculations in the order they are written. Link to comment Share on other sites More sharing options...
MattSantos Posted December 18, 2023 Share Posted December 18, 2023 1 hour ago, The Hallucinating Goose said: I was always taught you did the calculations in brackets if there is any and then do the rest of the problem in order as it is written. So if the 8 x 8 was in brackets you would get -48 but it isn't in brackets here so, like I say, I was taught you just did the separate calculations in the order they are written. This is where i stand. No brackets, no order of calculations required Running the Rob Burrow marathon to raise money for the My Name'5 Doddie foundation: https://www.justgiving.com/fundraising/ben-dyas Link to comment Share on other sites More sharing options...
JohnM Posted December 18, 2023 Share Posted December 18, 2023 1 hour ago, The Hallucinating Goose said: I was always taught you did the calculations in brackets if there is any and then do the rest of the problem in order as it is written. So if the 8 x 8 was in brackets you would get -48 but it isn't in brackets here so, like I say, I was taught you just did the separate calculations in the order they are written. The The brackets are implied. Confirmation from TonyXIII, please. Link to comment Share on other sites More sharing options...
Padge Posted December 18, 2023 Share Posted December 18, 2023 The algebraic rules of precedence are: 1. Brackets 2. Exponents 3. Multiplication 4. Division 5. Addition 6. Subtraction. BEMDAS Computer programmers who do not understand maths cause confusion as they sometimes write programs that do a straight left to right order of calculation. Visit my photography site www.padge.smugmug.com Radio 5 Live: Saturday 14 April 2007 Dave Whelan "In Wigan rugby will always be king" This country's wealth was created by men in overalls, it was destroyed by men in suits. Link to comment Share on other sites More sharing options...
The Hallucinating Goose Posted December 18, 2023 Author Share Posted December 18, 2023 59 minutes ago, JohnM said: The brackets are implied. Confirmation from TonyXIII, please. How do you know where the brackets are implied? Link to comment Share on other sites More sharing options...
ivans82 Posted December 18, 2023 Share Posted December 18, 2023 11 hours ago, The Hallucinating Goose said: If you work out this maths problem, what answer do you get? 8 - 8 x 8 + 8 I don't know if maths is taught differently these days but apparently the answer I get is not correct. Asked a lot of people (of a certain age) , they all answered 8 .....so it seems maths is taught differently these days . Link to comment Share on other sites More sharing options...
JohnM Posted December 18, 2023 Share Posted December 18, 2023 (edited) 8 minutes ago, The Hallucinating Goose said: How do you know where the brackets are implied? Drummed into me in maths lessons. Actually, Padge explained it perfectly in his post. In the absence of parentheses and exponents, you evaluate the multiplication. Edited December 18, 2023 by JohnM Link to comment Share on other sites More sharing options...
HawkMan Posted December 18, 2023 Share Posted December 18, 2023 Just tried it on my calculator on my phone. When I did, 8-8×8+8 I got -48 However doing, 8-8=, then ×8=, then +8= got 8. The calculator assuming brackets around 8x8 1 1 Link to comment Share on other sites More sharing options...
hindle xiii Posted December 18, 2023 Share Posted December 18, 2023 13 hours ago, The Hallucinating Goose said: If you work out this maths problem, what answer do you get? 8 - 8 x 8 + 8 I don't know if maths is taught differently these days but apparently the answer I get is not correct. Super 8s. Link to comment Share on other sites More sharing options...
Wolford6 Posted December 18, 2023 Share Posted December 18, 2023 Search me. Coming from a council estate, I've never been sure how many "f"s there are in Mafs. Under Scrutiny by the Right-On Thought Police Link to comment Share on other sites More sharing options...
Midlands hobo Posted December 18, 2023 Share Posted December 18, 2023 64. 8*8 is 64 + and - 8 cancel each other out. Link to comment Share on other sites More sharing options...
Padge Posted December 18, 2023 Share Posted December 18, 2023 (edited) 6 hours ago, The Hallucinating Goose said: How do you know where the brackets are implied? If you see x or * or / or ÷ then brackets are implied around the numbers either side of the operator when they are not there. 1+2*3 therefore is 1+(2*3)=7 and 1-2÷4 therefore is 1-(2÷4)=0.5 Simple calculators work on a straight (incorrect) left to right operation, scientific calculators usually follow the algebraic convention. Edited December 18, 2023 by Padge 1 Visit my photography site www.padge.smugmug.com Radio 5 Live: Saturday 14 April 2007 Dave Whelan "In Wigan rugby will always be king" This country's wealth was created by men in overalls, it was destroyed by men in suits. Link to comment Share on other sites More sharing options...
unapologetic pedant Posted December 18, 2023 Share Posted December 18, 2023 18 hours ago, The Hallucinating Goose said: If you work out this maths problem, what answer do you get? 8 - 8 x 8 + 8 Treated as the left side of an algebraic equation where a is 4, it becomes 2a - 2a × 2a + 2a. This would be written 2a(2a - 2a) + 2a. Clearly, the first term equals zero, leaving 2a. Hence, the answer is 8. Link to comment Share on other sites More sharing options...
gingerjon Posted December 18, 2023 Share Posted December 18, 2023 How many confidently asserted answers that can't be all be right are we up to now? Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life. (Terry Pratchett) Link to comment Share on other sites More sharing options...
Padge Posted December 18, 2023 Share Posted December 18, 2023 (edited) 35 minutes ago, unapologetic pedant said: Treated as the left side of an algebraic equation where a is 4, it becomes 2a - 2a × 2a + 2a. This would be written 2a(2a - 2a) + 2a. Clearly, the first term equals zero, leaving 2a. Hence, the answer is 8. No it would be 2a -(2a*2a)+2a Or 8-(8*8)+8 the first operator is * thus it becomes 8-64+8 next 8-64 = -56 giving -56+8 which = -48. Answer is -48 Note Multiplication and Division have equal weighting as do addition and subtraction, once the multiplication is done the maths becomes a straight left to right calculation. Edited December 18, 2023 by Padge 1 Visit my photography site www.padge.smugmug.com Radio 5 Live: Saturday 14 April 2007 Dave Whelan "In Wigan rugby will always be king" This country's wealth was created by men in overalls, it was destroyed by men in suits. Link to comment Share on other sites More sharing options...
marklaspalmas Posted December 18, 2023 Share Posted December 18, 2023 11 minutes ago, Padge said: Multiplication and Division have equal weighting as do addition and subtraction, once the multiplication is done the maths becomes a straight left to right calculation. 8 hours ago, Padge said: The algebraic rules of precedence are: 1. Brackets 2. Exponents 3. Multiplication 4. Division 5. Addition 6. Subtraction. BEMDAS Computer programmers who do not understand maths cause confusion as they sometimes write programs that do a straight left to right order of calculation. So is your 1 to 6 order wrong? Shouldn't it be 1, 2 3=, 3=, 5=, 5= https://www.fevarchive.co.uk/ Link to comment Share on other sites More sharing options...
bobbruce Posted December 18, 2023 Share Posted December 18, 2023 8 hours ago, ivans82 said: Asked a lot of people (of a certain age) , they all answered 8 .....so it seems maths is taught differently these days . It’s not just taught differently if you put it in that order into a calculator it does come out as -48. Link to comment Share on other sites More sharing options...
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