Răspuns :
A)20:-jumatatea=20÷2=10 sau [tex] \frac{20}{2} [/tex]=10
-sfertul=20÷4=5 sau[tex] \frac{20}{4} [/tex]=5
28:-jumatatea=28÷2=14 sau [tex] \frac{28}{2} [/tex]=14
-sfertul=28÷4=7 sau [tex] \frac{28}{4} [/tex]=14
56-jumatatea=56÷2=28 sau [tex] \frac{56}{2} [/tex]=28
-sfertul=56÷4=14 sau [tex] \frac{46}{4} [/tex]=14
16:-jumatatea=16÷2=8 sau [tex] \frac{16}{2} [/tex]=8
-sfertul=16÷4=4 sau [tex] \frac{16}{4} [/tex]=4
-sfertul=20÷4=5 sau[tex] \frac{20}{4} [/tex]=5
28:-jumatatea=28÷2=14 sau [tex] \frac{28}{2} [/tex]=14
-sfertul=28÷4=7 sau [tex] \frac{28}{4} [/tex]=14
56-jumatatea=56÷2=28 sau [tex] \frac{56}{2} [/tex]=28
-sfertul=56÷4=14 sau [tex] \frac{46}{4} [/tex]=14
16:-jumatatea=16÷2=8 sau [tex] \frac{16}{2} [/tex]=8
-sfertul=16÷4=4 sau [tex] \frac{16}{4} [/tex]=4