tim 2 so a va b biet tich cua chung la 444. Neu them 3 don vi vao so b thi tich moi la 555
Neu tang them 5 don vi vao thua so thu nhat thi tich moi la 595. Tim 2 thua so biet tich cua chung bang 420.
tich cua 2 phan so la 2/5. Neu ta them vao thua so thu hai 3 don vi thi duoc tich la 28/15. tim 2 phan so do?
tich cua hai so la 276 . neu them 19 don vi vao so thu nhat thi tich cua hai so la 713 . tim hai so do ?
tim hai so tu nhien biet rang tich cua chung la 630 va neu them 4 don vi vao mot thua so thi tich moi la 798
Tich cua hai phan so la 3/7 neu them vao thua so thu nhat 2 don vi thi tich la 13/21. Tim hai phan so do.
Ai giai that chi tiet va de hieu thi minh tick cho.
Tich cua 2 so la 6210 neu giam 1 thua so di 7 don vi thi tich moi la 5265 tim cac thua so cua tich
tich cua hai so la 276 neu them 19 dv vao so thu nhat thi tich 2 so la 713 tim 2so do
tim 1 so co 2 chu so .neu viet them so 5 vao ben trai so do thi duoc 1 so moi hon 3 lan so ban dau la 444 don vi. (cau tao so nha cac ban)
