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Please help an 8yearold! (it's not me)
Using only the digits 1, 4, 5, and 7, and one addition sign, and one subtraction sign, find a way to get the answer 19. ex: 571+4
 2 years ago
 2 years ago
Please help an 8yearold! (it's not me) Using only the digits 1, 4, 5, and 7, and one addition sign, and one subtraction sign, find a way to get the answer 19. ex: 571+4
 2 years ago
 2 years ago

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cathyangsBest ResponseYou've already chosen the best response.2
it can only have an addition sign and a subtraction sign, no brackets or anything. No powers, bases or anything like that either.
 2 years ago

cathyangsBest ResponseYou've already chosen the best response.2
basically something you can do on a nonprogramming, elementaryschool calculator
 2 years ago

shelovespianoBest ResponseYou've already chosen the best response.1
can you use the digits more than once?
 2 years ago

shelovespianoBest ResponseYou've already chosen the best response.1
...Well, the closest I can get is 17+54=18 :/
 2 years ago

cathyangsBest ResponseYou've already chosen the best response.2
XD that's how close I got.
 2 years ago

saifoo.khanBest ResponseYou've already chosen the best response.0
We can use only + and  ?
 2 years ago

cathyangsBest ResponseYou've already chosen the best response.2
yup, and you can only use each one time.
 2 years ago

cathyangsBest ResponseYou've already chosen the best response.2
I do so believe that this is the hardest thirdgrade question on openstudy...OTL
 2 years ago

cathyangsBest ResponseYou've already chosen the best response.2
...ok... why? This is a "threestar" problem on a 3rd grader's hw...it's not possible?
 2 years ago

TiamatBest ResponseYou've already chosen the best response.0
Does it have to use ALL the digits and signs?
 2 years ago

cathyangsBest ResponseYou've already chosen the best response.2
yes. the image is a calculator with all the keys you have to use once checked.
 2 years ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
can you please check to see if the whole question has be written correctly
 2 years ago

cathyangsBest ResponseYou've already chosen the best response.2
it is. here is the exact phrasing: Below each calculator, write a number sentence to give the answer shown. The symbols and digits to use are checked on each calculator. the answer is 19. The digits and symbols are 1, 4, 5, 7, , + and =.
 2 years ago

TiamatBest ResponseYou've already chosen the best response.0
Wait, if that's the exact question, then does it say in the directions to use everything once? If so, then I have to agree with UnkleRhaukus. I can only get as far as 18 with these numbers.
 2 years ago

saifoo.khanBest ResponseYou've already chosen the best response.0
lol, same here.. i dont knw where to add 1. keep on gettinh 18.
 2 years ago

cathyangsBest ResponseYou've already chosen the best response.2
it does't explicitly say, but all the other questions like that on the same sheet only use each digit once.
 2 years ago

TiamatBest ResponseYou've already chosen the best response.0
Ahhhh. This is making my brain hurt. Either it's a type of trick question where you do use them more than once, like: 17 + 5  4 + 1 = 19 Or a typo. I'm sorry, I just can't figure this one out. ):
 2 years ago

saifoo.khanBest ResponseYou've already chosen the best response.0
might be a misprint in the book?
 2 years ago

cathyangsBest ResponseYou've already chosen the best response.2
it's not a book...but perhaps.
 2 years ago
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