Mathematics, 23.02.2021 21:30, buywickless

9. Rob usa el cálculo mental para resolver 90 – 30. Dice que 9 decenas menos 3 decenas son
6 decenas, o 60. ¿Esto es verdadero o falso?
Encierra tu respuesta en un círculo.

Verdadero

o

Falso

Answers: 3

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9. Rob usa el cálculo mental para resolver 90 – 30. Dice que 9 decenas menos 3 decenas son
6...