Mates

  • October 2019
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1) Representa els següents nombres romans en numeració decimal o a l'inrevés: • • • • • • •

MCMXCII = CDIX = 7.578 = 12.483 =

2) Escriu el desenvolupament decimal del nombre 3.692.457.

3) Escriu el nom de les propietats que representen aquestes expressions: • • • • • • • • •

a + (b + c) = (a + b) + c a·1=a a·b=b·a (a · b) · c = a · (b · c) a+0=a

4) Aplica la propietat distributiva o treu factor comú segons correspongui, no fa falta resoldre: • • • • • • •

3 · (5 + 9) = ( 6 - 2) · 7 = 3·4+3·2= 5·6-9·6=

5) Completa aquesta taula de termes de divisió exacta: Dividend 345 504 divisor 7 84 quocient 69 139

6) Fes aquestes operacions combinades: •

[12 + 4 · (8 - 15 : 5) ]: ( 2 · 6 - 4) =



[3 · (5 · 6 + 2) - ( 14 - 3 · 2) ] : 8 + 2 =

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