Jumatatea numerelor:
[tex]\frac{1}{2}*12=6\\\frac{1}{2}*16=8\\\frac{1}{2}*20=10\\\frac{1}{2}*8=4\\[/tex]
Sfertul numerelor:
[tex]\frac{1}{4}*12=3\\\frac{1}{4}*16=4\\\frac{1}{4}*20=5\\\frac{1}{4}*8=2\\[/tex]
Explicatie:
Jumatatea reprezinta "[tex]\frac{1}{2}[/tex]" din numar, iar sfertul "[tex]\frac{1}{4}[/tex]"
