Verdadero: 10 x 10 = 100, 19 x 100= 1.900, 29 x 100= 2.900, 5 x 10= 50, 90 x 10= 900, Falso: 10 x 10 = 1.000, 23 x 10= 2.300, 19 x 100= 190, 45 x 100= 90, 60 x 10= 6.000,

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