Tim 2 so thap phan biet tong la 14 va neu doi dau phay so thu hai sang phai 2 hang thi duoc tong moi la 122,27
tim hai so thap phan co tong la 26,54 biet neu doi dau phay so thu nhat sang phai 2 hang ta duoc so moi va biet hieu cua so moi va so thu hai la 1118.8
Tim 2 so thap phan co tong 3,86. Biet doi dau phay cua so thu nhat sang trai 2 hang thi duoc tong moi la 3,257
Tim 2 so thap phan co tong 8,72.Biet neu doi dau phay so thu hai sang trai 1 hang thi duoc so moi kem so thu nhat 0,987 don vi
co mot so thap phan , neu doi dau phay cua so do sang phai 2 chu so ta duoc so thu 2 , doi dau phay sang trai 1 chu so ta duoc so thu 3 . tong 3 so la 323,52 . tim so thap phan ban dau
Tim mot so thap phan ,biet neu chuyen dau phay sang phai 1 hang roi sang trai 2 hang thi duoc 3 so co tong la 247,725
Tim so thap phan A biet : Neu doi dau phay sang trai 1 hang ta duoc so B , doi dau phay sang phai 1 hang ta duoc so C..Biet A+B+C=2394,27
hai so thap phan co tong la 38,18. Neu ta doi dau phay cua so lon sang ben phai mot hang va giu nguyen so be thi tong cua hai so thap phan luc do la 269,93 . Tim hai so thap phan do
tong cua hai so thap phan 80,01. Neu dich dau phay cua so thu nhat sang ben trai 1 hang roi cong voi so thu hai thi duoc tong moi la 19,233.Tim hieu cua hai so do. giai ro ra nhe ^.^