Tim 3 phan so khac nhau ,biet tong cua phan so thu 1 va phan so thu 2 la 7/8 ,tong cua phan so thu 2 va phan so thu 3 la 8/7 ,tong cua phan so thu 1 va phan so thu 3 la 8/9.
tim 1 phan so bang phan so 31 / 45 , biet phan so can tim co tu sova mau so deu la cac so co 2 chu so
bai 1.A,sap xep cac phan so sau day theo thu tu tu lon den be ;5/6,13/8,8/9 ,1/3 ,3/2 ;B,tim tat ca cac phan so sau cho mau so la so co 2 chu so . Cac ban giup to nhe .
TIM MOT PHAN SO BIET , NEU THEM VAO TU SO 10 DON VI THI TA DUOC PHAN SO CO GIA TRI BANG 1 . CON NEU CHUYEN 1 DON VI TU TU SO XUONG MAU SO THI TA DUOC PHAN SO CO GIA TRI BANG 1/2 PHAN SO DO LA .....
tim hai phan so co tu so cung la 1 va mau la hai so tu nhien lien tiep sao cho 2/13 man giua hai phan so do
tim mot phan so neu them 7 don vi vao tu so ta duoc phan so moi co gia tri bang 1 con neu chuyen 1 don vi tu tu so xuong mau so ta duoc phan so moi co gia tri bang 1/2 phan so do la may ?
Cho phan so 67 phan 91.Hay tim 1 so tu nhien sao cho khi dem tu va mau so cua phan so da cho tru di so do ta duoc phan so moi co gia tri bang 1 phan 7. So tu nhien can tim la : ...
tim 1 phan so toi gian co tu so la 3 biet khi cong 1 vao tu so cua phan so do va giu nguyen mau so ta se duoc phan so moi co gia tri bang 1 phan2
Tim 1 phan so co mau so la 25 va bang phan so 12/10
