gọi 2 số thập phân là : a, b
a + b = 46,64
Chuyển dấu phẩy sang bên trái số bé sẽ gấp thêm 10 lần
Tổng hiểu rồi làm nhé
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
tim 2 so thap phan biet hieu 2 so la 16,75 va neu doi dau phay cua so lon sang ben phai 1 hang ma giu nguyen so nho thi hieu la 306,1
hieu cua so thap phan la 16,75. neu doi dau phay cua so lon sang phai mot hang ma van giu nguyen so be thi hieu hai so la 306,1. tim so thap phan do
tong hai so thap phan la 32,46.dich chuyen dau phay cua so be sang ben phai 1 hang ta duoc so moi lon hon so lon la 26,28.tim hai so do
2 so thap phan co hieu la 13 .21 neu doi doi dau phay cua so be sang phai 1 hang roi cong voi so lon ta duoc 41.15 tim 2 so do
tim 3 so thap phan A,B va C co tong la 200,4921.Neu chuyen dau phay cua so A sang ben trai 2 chu so thi duoc so B, neu chuyen dau phay cua so A sang ben phai mot hang thi duoc so C.
Tong hai so thap phan la 63,25 .Neu doi day phay cua so be sang trai mot hang thi hieu so lon va no la 49,5 .Tim so be?
Tim 2 so thap phan co tong la 21,74.Biet neu doi dau phay so thu nhat sang trai 1 hang , doi dau phay so thu hai sang phai 1 hang thi duoc tong moi la 194,234
Tim so thap phan A biet neu doi dau phay cua A sang ben phai 1 hang thi ta duoc so B va doi dau phay cua A sang ben trai 1 hang thi ta duoc so C va B- C= 126,225
