L14_Wed_Feb_17 - MAE3811Sp. 2010 Mahoney1 Last Time. We...

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1 MAE3811–Sp. 2010 Mahoney–1 Last Time…. We defined Subtraction in terms of addition [and order] We looked at ways to interpret subtraction as “Take Away” and “What to add” We looked at pencil and paper algorithms for addition Today we’ll look at pencil and paper algorithms for subtraction. This will include two algorithms not in your book. MAE3811–Sp. 2010 Mahoney–2 I want to know what you think. When we started pencil and paper algorithms I showed a table for the addition of any single digit number with any other. The highest answer was 18. Here is an analogous table for subtraction of [almost] any single digit number. Do you notice any pattern to the answers? Why is there a region with no answers? How can view or interpretations of subtraction in this table? I made this table, I didn’t find it on the internet. Why does that both me?
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2 MAE3811–Sp. 2010 Mahoney–3 Now let’s start with standard subtraction: Rules and Steps: Write numbers vertically, Place Values should be aligned. Move Right to left
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This note was uploaded on 07/22/2011 for the course MAE 3811 taught by Professor Mahoney during the Spring '11 term at University of Florida.

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L14_Wed_Feb_17 - MAE3811Sp. 2010 Mahoney1 Last Time. We...

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