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Técnicas de Cálculo Mental Veloz

Técnicas de Cálculo Mental Veloz

          
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About the Book

Para explicarte de qué trata este manual, te mostraré un pequeño ejemplo: Calcula mentalmente el cuadrado de 65. Es difícil verdad? Para hacerlo un poco más fácil, prueba de la siguiente manera: multiplica la cifra que indica las decenas por si misma más 1. Al resultado, ponle al final el número 25 (que es el cuadrado de 5). Por lo que: Primer paso: 6 x (6+1) = 6 x 7 = 42 Segundo paso: Pon al final 25 Resultado: 4225. Cuatro mil doscientos veinticinco. Como ves, para resolver mentalmente de manera veloz un cálculo complicado como el cuadrado de 65, la única operación que debiste hacer es 6x7, cuyo resultado seguramente conoces desde los primeros años de primaria. Con el mismo procedimiento puedes calcular el cuadrado de cualquier número de dos cifras que termina en 5 en tal vez dos segundos y medio. Con una pequeña variación que te enseñaré, podrás hacer lo mismo con números que terminan en múltiplos de 3." Y así, este manual habla de técnicas de este tipo, y explica también el sentido que tiene conocerlas y utilizarlas. El cálculo mental es una de las tantas capacidades que por varios motivos, estudiantes y adultos del siglo XXI están perdiendo. Muchos podrán decir que las calculadoras y las hojas de cálculo son mucho más potentes que nuestro cerebro, haciendo que la capacidad de calcular mentalmente, sea prácticamente inútil. Esto no es verdad! De hecho, el cálculo mental es un ejercicio en si mismo, y su utilidad va mucho más allá que la capacidad de llegar a un resultado.


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Product Details
  • ISBN-13: 9781511830249
  • Publisher: Createspace Independent Publishing Platform
  • Publisher Imprint: Createspace Independent Publishing Platform
  • Height: 198 mm
  • No of Pages: 52
  • Series Title: Spanish
  • Weight: 59 gr
  • ISBN-10: 1511830247
  • Publisher Date: 03 May 2015
  • Binding: Paperback
  • Language: Spanish
  • Returnable: N
  • Spine Width: 3 mm
  • Width: 129 mm


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