Addition square - how to solve

[ChillDKC]

I am really struggling with this question, I have no idea how to solve and 'complete this addition square'. I don't see any connection to the numbers on the outside. I'm totally lost. Any help will be appreciated

 

[Cartesius24]

slowly

You know general instruction?

 

[ChillDKC]

No, all we are told is to solve the addition square. Any ideas?

 

[ksdhart]

Addition squares were not something I learned in grade school, so please bear with me if this does not connect with what you've learned. From what I can tell, you're supposed to fill in not only the individual boxes of the addition square, but also the remaining numbers around the edges. In an addition square, any individual box is the sum of the "row number" and the "column number." For instance, you're given a number in the 3rd box of the first row. The third column has a number attached to it. So what would you add to that column number to get the number in the box? And where would you write that new number on the addition square? Proceed in this manner and you'll have all the squares filled in.

 

[ChillDKC]

Wow ksdhart, that was all the explanation I needed; it all worked out! I was trying to find patterns that weren't there. I hadn't seen one of these squares before either - I've just changed schools and this was new to me. Thank you so much everyone

 

[ChillDKC]

Addition squares were not something I learned in grade school, so please bear with me if this does not connect with what you've learned. From what I can tell, you're supposed to fill in not only the individual boxes of the addition square, but also the remaining numbers around the edges. In an addition square, any individual box is the sum of the "row number" and the "column number." For instance, you're given a number in the 3rd box of the first row. The third column has a number attached to it. So what would you add to that column number to get the number in the box? And where would you write that new number on the addition square? Proceed in this manner and you'll have all the squares filled in.

Dear ksdhart, I did reply last night but it doesn't look like it was posted. Thank you so much, this makes so much sense.

 

[ChillDKC]

Dear Denis, this also makes sense (kind of). Why can all points be removed from the answer 0.74 for example?

Silly problem...was your teacher smoking funny stuff?

Since negatives are allowed (like column 3 requires
a negative in order to reduce 464 to 74) then no
reason why 0 can't be used:

  0    0  464   0 =  464
  0  315    0 585 =  900
318    0    0   0 =  318
583  710 -390 -25 =  878
=== ==== ==== ===   ====
901 1025   74 560 = 2560

There ya go!

But if you insist 0 can't be used, and what's used must all be
different,use numbers that add up to the same in top 3 rows;
(row 4 will be the net difference)
row 1: 1,2,11 (14)
row 2: 6,8 (14)
row 3: 3,4,7 (14)
Feast yer eyes on this:

  1    2  464  11 =  478
  6  315    8 585 =  914
304    3    4   7 =  318
583  710 -402 -43 =  848
=== ==== ==== ===   ====
894 1030   74 560 = 2558

Everybody happy