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Whole school math talk - decomposition!

Decomposition - breaking it down!
Posted on 02/16/2020
DecompositionThe focus of our hallway math is now decomposition.  Students are being challenged to think flexibly about breaking down a number beyond base 10.  You might be surprised at how many ways we can do this.  Feel free to try it at home!

For example:

Base 10:  43 = 40 + 3

Beyond base 10:  43 = 30 + 13

Consecutive numbers: 43 = 21 + 22
(or near doubles)

Near thirds:  43 = 15 + 14 + 14

Near quarters:  43 = 10 + 11 + 11 + 11

Near fifths:  43 = 8 + 8 + 9 + 9 + 9

Prime numbers:  43 = 17 + 13 + 11 + 2

This flexible thinking has many applications in math and develops our students' mental computation skills.

Stay tuned!  We are working on some video clips to share our thinking with you.






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