\(\frac{21}{106}\)< \(\frac{32}{159}\)
OK
\(\frac{21}{106}\)< \(\frac{32}{159}\)
OK
Trung binh cong cua 4 so la 32.Lay so thu nhat cong voi 3,so thu hai tru di 3,so thu 3 nhan voi 3,so thu 4 chia voi 3, thi duoc 3 so bang nhau.tim so be nhat trong 4 so do.
so nao nhan voi 32 ra mot so nao do chia het cho 11
258+159
nho ket ban voi tui nha
tim 1 so biet rang neu lay so do cong voi 37,25 roi tru di 42,05 thi duoc 17, 32
so sanh a voi b biet;
a=75/100+78/21+19/32+22/21+13/32
b=(27,5x0,1+2,5x0,1)x2
tim hai so biet hieu cua chung bang 32 va neu dem st1 nhan voi 1/3 st2 nhan voi 1/7 thi duoc hai tich co ket qua bang nhau
So sanh :
A = 1/2 + 1/4+ 1/8 + 1/16 + 1/32 voi 2005/2006
A=1/31+1/32+1/33+...+1/89+1/90
So sánh A voi 5/6
lop 5a co 18 nam va 32 nu
a,tim ti so phan tram cua so nam so voi so nu
b,tim ti so phan tram cua so nam so voi so hoc sinh ca lop
c,cuoi nam lop co 8 hoc sinh xuat sac.hoi lop co bao nhieu phan tram hoc sinh xuat sac