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How to make a ten to find 12-4
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Nov 4, 2017
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How to make a ten to find 12-4
Mathematics
middle-school
Zion Ben Yacov
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Zion Ben Yacov
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6
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I think is 8 I'm not sure I think is that
Dmitry Zinkevich
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Nov 6, 2017
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Dmitry Zinkevich
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3
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take the 12 and split it into 10 + 2.
then you have 10 + 2 - 4.
reorder to get 10 - 4 + 2 (by commutative property)
then you have 6 + 2 = 8
Deejbee
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Nov 10, 2017
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Deejbee
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