Question

scrieti sub forma zecimala :
$\frac{25}{90}$$\frac{101}{90}$$\frac{14}{9}$$\frac{7}{18}$
3 intreg si 5 pe 6 , 2 intreg si 5 pe 7
scrieti sub forma de fractie :
0,16; -3,14; 0,(8); -5,(7); 0,3(5); 12,3(45); -7,6(543)
P.s : rasp la transformarea in fractii puteti pune bara
va rog ajutor

Answer 1

1,) $\frac{25}{90} = \frac{5}{18} =2,(7)$
$\frac{101}{90}= 1,1(2)$
$\frac{14}{9} =1,(5)$
$\frac{7}{18} =0,3(8).$
3$\frac{5}{6} = \frac{3*6+5}{6} = \frac{23}{6} =3,8(3).$
$2 \frac{5}{7} = \frac{2*7+5}{7} = \frac{19}{7} =2,(71425).$

2.) 0,16=$\frac{16}{100}$
-3,14=-$\frac{314}{100}$
0,(8)=$\frac{8}{9}$
-5,(7)=-$\frac{57-5}{9} = \frac{52}{9}$
0,3(5)=$\frac{35-3}{9} = \frac{32}{9}$
12,3(45)=$\frac{12345-123}{99} = \frac{1222,2}{99}$
-7,6(543)=$- \frac{76543-76}{999} =7646,7:999$