Question

Scrieti sub forma zecimala numerele:
a) 2\5 ; 16\3; -2 intreg si 3\8; 1 intreg si 3\7; 3\16; -4\9; 25\90; -101\90.
Explicati cu ati facut in colonita.

Answer 1

$\displaystyle a). \frac{2}{5} =2:5=0,4 \\ \\ b). \frac{16}{3} =16:3=5,(3) \\ \\ c).-2 \frac{3}{8} =- \frac{2 \cdot 8+3}{8} = \frac{16+3}{8} = \frac{19}{8} =19:8=2,375 \\ \\ d).1 \frac{3}{7} = \frac{1 \cdot 7 +3}{7} = \frac{7+3}{7} = \frac{10}{7} =10:7=1,( 428571) \\ \\ e). \frac{3}{16} =3:16=0,1875 \\ \\ f).- \frac{4}{9} =-4:9=-0,(4) \\ \\ g). \frac{25}{90} =25:90=0,2(7) \\ \\ h).- \frac{101}{90} =-101:90=-1,1(2)$