viet cac so huu ti sau duoi dang cac phan socung mau duong
a,\(\frac{4}{̣̣̣̣̣̣9}va\frac{3}{7}\)
b \(\frac{-2}{3}va\frac{-4}{5}\)
c\(\frac{1}{-5}\)va 1
viet so huu ti -7 phan 18 duoi dang sau day
a] tong cua 2 so huu ti am
b] hieu cua 2 so huu ti dong
c] tong cua 2 so huu ti am trong do la -1 phan 6
Tim hai so huu ti x va y sao cho cac phan so dai dien co mau la 13, cac tu so la hai so nguyen le lien tiep thoa man dieu kien:x<4/5<y
Viet cac so sau duoi dang phan so:
a, 2,(14) b,-2,(15)
c,-4,3(2) d,0,14(8)
Tim cac so nguyen to a, b co 1 chu so de so x bang 5 x a phan 6 x b viet duoc duoi dang:a, so thap phan huu hanb, so thap phan vo han tuan hoantim hai so huu ti x,y sao cho phan so dai dien co mau la 13 va cac tu la 2 so nguyen le lien tiep va x<\(\frac{4}{5}\)<y
phan so nao duoc viet duoi dang phan so huu han
A.5/12
B.3/11
C.1/14
D.15/30
CMR khi viet duoi dang thap phan thi so huu ti (9/11 -81/100)^2012 có ít nhat 4020 chu so 0 dau tien sau dau phay
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 cac so thap phan sau duoi dang phan so toi gian
0,2545454......
