Addition of 3 and 4 digits numbers.
English
Intermedio
30
Preguntas
3 min
Por pregunta
10:03
Tiempo promedio
3,0
Puntuación del concurso
10
Participantes
2 comentarios
Question 10 does not have a correct answer. The use of words over illustration in the explanation of addition takes away from learning.
Thanks, suggestion also noted. I will check to edit it if possible to.
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