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“5 is the same as 50, just with a 0.”

Posted on October 16, 2013 by mpershan | 18 Replies

pic1

The kid also answered the “How do you know?” question:

“Because 5 is half of 10, and 50 is the same number as 5, just with a 0, and 10 is the same number as 100 just with another 0.”

What does this mistake say about the way kids see numbers and multiplicative relationships?

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Posted in Counting, Multiplication, Numbers & Operations in Base 10, Place Value.

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