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Afla:
a)jumatatea numerelor : 4,8,12,16,20;
b)patrimea numerelor 4,8,12,16,20;
c)doimea numerelor: 6,10,14,,18,20;
d)sfertul numerelor: 8,24,28,32,40;
e)treimea numerelor:18,21,24,27,30.


Răspuns :

[tex]a) \frac{4}{2} = 2[/tex]

[tex] \frac{8}{2} = 4[/tex]

[tex] \frac{12}{2} = 6[/tex]

[tex] \frac{16}{2} = 8[/tex]

[tex] \frac{20}{2} = 10[/tex]

[tex]b) \frac{4}{4} = 1[/tex]

[tex] \frac{8}{4} = 2[/tex]

[tex] \frac{12}{4} = 3[/tex]

[tex] \frac{16}{4} = 4[/tex]

[tex] \frac{20}{4} = 5[/tex]

[tex]c) \frac{6}{2} = 3[/tex]

[tex] \frac{10}{2} = 5[/tex]

[tex] \frac{14}{2} = 7[/tex]

[tex] \frac{18}{2} = 9[/tex]

[tex] \frac{20}{2} = 10[/tex]

[tex]d) \frac{8}{4} = 2[/tex]

[tex] \frac{24}{4} = 6[/tex]

[tex] \frac{28}{4} = 7[/tex]

[tex] \frac{32}{4} = 8[/tex]

[tex] \frac{40}{4} = 10[/tex]

[tex]e) \frac{18}{3} = 6[/tex]

[tex] \frac{21}{3} = 7[/tex]

[tex] \frac{24}{3} = 8[/tex]

[tex] \frac{27}{3} = 9[/tex]

[tex] \frac{30}{3} = 10[/tex]