Suma y resta (de muchos o 1):)(:

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Age: 7-11
Level: 4,5 and 6 primaria
Language: Spanish (es)
ID: 352842
07/09/2020
Country code: MX
Country: Mexico
School subject: matematicas (1064753)
Main content: Sumas y restas (2030572)

esto esta bien

Other contents: .......!¿?

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Suma y resta (de muchos o 1):)(:

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