\(3\frac{1}{2}\)
\(=\frac{2\times3+1}{2}\)
\(=\frac{7}{2}\)
\(=\frac{7\times5}{2\times5}\)
\(=\frac{35}{10}=3,5\)
Hoặc \(\frac{7}{2}=7:2=3,5\)
tim so thap phan x co mot chu so o phan thap phan sao cho : 9<x<10
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
1 gia tri bieu thuc ; GIA TRI TUYET DOI -3 PHAN 5 =?
t2so thap phanla16,26 neu tang so t1len 5 lanva s t2len 2lan duoc 2 so co tong la43,2 tim 2so
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
lam sao de lam ra phan so
cho phan so 17/21 . Hay tim 1 so tu nhien sao cho khi ca tu so va mau so cua phan so da cung cong voi so do thi dc phan so moi co gia tri bang 6/7
Gap doi mot so, roi lai gap doi tich, tim duoc thi bang 40. Tim so do
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
