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Propiedades de la suma y resta

(5)
Debe emparejar cada una de las operaciones con la respuesta correcta. En cada caso puede realizar la operación indicada mentalmente o elaborándola en su casa.
Recommended age: 10 years old
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  1. 1
    Instituto Tecnisistemas
    00:02
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  2. 2
    Mariana Gonzalez
    00:13
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  3. 3
    Michelle Tatiana Rivera Huertas
    00:14
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  4. 4
    Orlando Morales
    00:31
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  5. 5
    Juana Valencia Mena
    00:38
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  6. 6
    Yira Salamanca
    00:39
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