QUESTIONNAIRE

How do you do it?  

                                       47_29

Most people probably assume that the way they learned to subtract is the way that everybody else does it
– but there is more than one ‘pencil and paper’ method. I am really interested to know which way you do it.

buy_the_books

 

Some people are surprised to find that even their nearest and dearest do it differently, and I would really like to gather some data on that, too. So if you can get others in your family to look at this with you, that would be great!

Here are the two main methods (there are others). Please check the boxes below according to how you and your family do it.

Subtraction by
Equal Addition

47_29_18

Subtraction by
Decomposition

37_29_18