Viet 4 phep tinh thich hop tu so 5 va so 0
Ai nhanh mk tk cho
so 0.2(63) viet duoi dang phan so la
viet phan so 141414/252525 thanh ti so phan tram
ghi ro cach giai
anh nhanh mik k
tim mot phan so bang phan so 3/4 biet rang neu lay tu so cua phan so do cong voi nam thi duoc phan so bang 4/5
Cho A = 4+2^2+2^3+2^4+...+2^30. hay viet A duoi dang luy thua co so 2
tong cua tat caa so co 4 chu so khac nhau viet boi 1 2 3 4 la
khi thuc hien phep cong 2 so thap phan 1 ban hoc sinh da viet nham dau phay cua 1 so hang sang ben trai 1 chu so nên tong tim duoc la 36,074 . Tìm 2 số hang do biet tổng dung la 149,96
Tim mot so co 2 chu so, biet rang khi viet them chu so 4 vao ben trai so do ta duoc mot so gap chin lan so phai tim
cho phan so 71/118 tim so b de khi them b don vi vao tu so va bot di b don vi vao mau so thi phan so bang 3/4