viet so 0,1(23) duoi dang p/s toi gian
viet 0,1(23) duoi dang phan so toi gian
để viet so 0,0(3)duoi dang phan so ta lam nhu sau:
theo cach tren hay viet cac so thap phan sau day duoi dang phan so :
0,0(8); 0,1(2); 0,1(23)
viet so 0,(5) duoi dang phan so toi gian
viet so 0.(5) duoi dang phan so toi gian la
0,(5)=0,(1).5=\(\frac{1}{9}.5=\frac{5}{9}\)
\(0,\left(5\right)=0,\left(1\right).5=\frac{1}{9}.5=\frac{5}{9}\)
0,(5) viet duoi dang phan so toi gian
\(0,\left(5\right)=5.0,\left(1\right)=5.\frac{1}{9}=\frac{5}{9}\)
1,12(6) viet duoi dang P/S toi gian la
1,12(6)=1+0,12(6)
=\(1+\frac{126-12}{900}=1+\frac{19}{150}=\frac{169}{150}\)
viet so 2,(18) duoi dang phan so toi gian ta duoc
\(2,\left(18\right)=\frac{24}{11}\)
\(Chắc đúng\)
tu so cua phan so khi viet 1.8(3) duoi dang phan so toi gian
1,8(3)=1/10.18,(3)=1/10.(1/9.3+18)=1/10.55/3=55/30
viet cac so thap phan sau duoi dang phan so toi gian
0,2545454......