Leitura de números: ordens e classes
Autor: Debora | Publicado: 2015-03-02T04:31:00-08:00



Leitura
de números: ordens e classes






Nosso sistema de numeração está organizado
por agrupamento: a cada 10 unidades formamos 1 dezena, 10 dezenas formam 1
centena, e assim por diante. Esse sistema é chamado decimal, pois os
agrupamentos são feitos de dez em dez.



Utilizando apenas dez símbolos (os
algarismos 0, 1, 2, 3, 4, 5, 6, 7, 8, 9) somos capazes de representar qualquer
número natural. 



O nosso sistema também é organizado por
ordens e classes, sendo que a cada três ordens formamos uma classe.








É hora de praticar


 

  
 

  
  &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;924017
 


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924017

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<!--[endif]-->&nbsp;



Observe
o número da placa.&nbsp; 

Qual
ordem de grandeza pertence esse número?

O
algarismo 2 pertence a que ordem?

Os
algarismos 1 e 7 compõem que classe?


Escreva
como se lê esse número.&nbsp;