Q&A #417

Teachers' Lounge Discussion: Addition error pattern

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From: Myriam Kobylkevich

To: Teacher2Teacher Public Discussion
Date: 2002021413:11:32
Subject: Re: Addition error pattern

I agree that only asking the student will answer the question. Perhaps the confussion stems from the fact that: 0 X any number = 0 This is likely if the student has been introduced to multiplication, particularly 2-digit number multiplication. The error could be a misunderstanding of arithmetic algorithms half memorized without regards for their meaning. It could be also an inadvertent automatic performance, like driving part-way your usual route to work, when you were headed to the grocery store.

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