Tổng lúc đó là :
109,05 + 21,212 = 130,262
Tổng lúc đó là :
109,05 + 21,212 = 130,262
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 mot so tu nhien va mot so thap phan la 2077,15 .Neu bo dau phay o so thap phan thi tong bang 8824 .Tim hai so do?
Tim mot so ,biet rang neu them so 5 vao ben phai so do thi tong cua hai so do se la 5021
Tong cua mot so thap phan va mot so tu nhien la 1079,69.Neu bo dau phay cua so thap phan thi tong se bang 4514.Tim 2 so do
1; tong ket nam hoc lop 5e co 60 phan tram so hoc sinh xep loai hoc luc gioi 30 phan tram so hoc sinh xep loai hoc luc kha con lai 4 em xep loai hoc sinh trung binh. hoi lop 5e co bao nhieu hoc sinh , trong lop co bao nhieu em xep loai hoc luc gioi?
2; lop 5b co 1\2 so hoc sinh duoc xep loai hac luc gioi, 1\3 so hoc sinh xep loai hoc luc kha con lai la hoc sinh xep loai hoc sinh trung binh. hoi lop co bao nhieu hoc sinh duoc xep loai hoc luc gioi? biet so hoc sinh xep loai hoc luc gioi nhieu hon so hoc sinh xep loai hoc luc kha la 5 ban?
3; khi chuyen dau phay cua so thap phan D sang trai mot hang thi so do giam di 18,072 don vi so thp phan D la bao nhieu?
4; khi chuyen dau phay cua so thap phan B sang phai mot hang thi so do tang them 175,05 don vi so thap phan B la bao nhieu?
5;khi chuyen dau phay cua so thap phan C sang trai 2 hang thi so do giam di 198,98 so thap phan C la bao nhieu?
6;khi chuyen dau phay cua so thap phan D sang phai 2 hang thi so do tang them ,198,891 don vi so thap phan D la bao nhieu?
7;0,25 phan tram cua mot so bang 3,8 thi so do la bao nhieu?
8; 1,25 cua mot so bang 1 thi so do la bao nhieu ?
giup minh nhe co the cac ban giai ra loi van duoc khong
tong cua hai so thap phan bang 8,4.Tim hai so do, biet neu so thu nhat tang 4 lan va giu nguyen so thu hai thi tong moi la
Bai 1 : Tong cua hai so la 2000. Neu so hang thu nhat them 135 don vi va so hang thu hai bot 531 don vi thi duoc tong moi la bao nhieu?
Bai 2 : Tim tong hai so biet rang neu so hang thu nhat bot di 246 don vi va so hang thu hai them 642 don vi thi duoc tong moi bang 2010.
Bai 3 : Hieu cua hai so la 1000. Neu so lon them 235 don vi va so be bot 200 don vi thi duoc hieu moi la bao nhieu?
Bai 4 : Hieu cua hai so bang 1234. Neu so lon bot 234 don vi va so be them 456 don vi thi duoc hieu moi la bao nhieu?
Bai 5 ; Tim hieu cua hai so, biet rang so lon va so be cung bot di 100 don vi thi duoc hieu moi la 1000.
tong cua hai so la 12 neu them chu so 3 vao ben phai cua 1 so thi tong moi la 51 tim hai so do (nho ghi cach giai ro rang ra nhe)
tong cua mot so tu nhien va mot so thap phan bang 372,991.Neu bo dau phay cua so thap phan di thi tong se bang 19345.tim hai so do