4 th grade math

cristiesharpe

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Feb 3, 2011
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Trying to help my daughter with her math homework and feel kinda dumb i hope its a typing error on the problem lol please help! You have a calculator using the following figures one time only (and you have to use them all) find the sum of 19 1 4 5 7 + - = Thanks ahead for any help
 
Makes no sense...can you post the original problem IN FULL please.
 
You have a calculator using the following figures one time only (and you have to use them all) find the sum of 19.
use only 1 4 5 7 + - =
 
cristiesharpe said:
You have a calculator using the following figures one time only (and you have to use them all) find the sum of 19.
use only 1 4 5 7 + - =
Well, since sum of the 4 digits = 17, then you must use a 2digit number;
and since only a + sign and only a - sign must be used, then other 2 remain as digits:
best I can do is: 17 - 4 + 5 = 18
 
Denis said:
cristiesharpe said:
You have a calculator using the following figures one time only (and you have to use them all) find the sum of 19.
use only 1 4 5 7 + - =
Well, since sum of the 4 digits = 17, then you must use a 2digit number;
and since only a + sign and only a - sign must be used, then other 2 remain as digits:
best I can do is: 17 - 4 + 5 = 18

Also falling short of 19:

15 - 4 + 7 = 18
 
17-4+5=18
15-4+7=18
14+7-4=17
57-41=16
71-54=17
Fourth Grade Math (I'd better go back to school)
-
falcon
 
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