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agora.xtec.cat · Prova de rapidesa de càlcul mental Multiplicar 4x5 = Ix8= 5x1= 4 xo = 4 XO = 5x7 = 1 2 2 Operacions fetes en 2 minuts = 10 Quart Nom Sumar 9+9= 9+9= Prova de rapidesa

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