so thu 1 : 3,33
so thu 2 : 2,22
so thu 3 : 1,11
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trung binh cong cua 3 so la 5/8 so thu ba bang trung binh cong cua so thu nhat va so thu hai so thu nhat hon so thu hai la 1/4 tim ba so do (viet dap so duoi dang so thap phan)
1. Tim trung binh cong cua tat ca cac so tu nhien co 4 chu so khac nhau duoc viet boi bon chu so 0;3;5;7.Trung binh cong cua tat ca cac so do la?2 .Tong cua 3 so bang 5,2. So thu nhat bang 2/3 so thu ba va so thu hai bang 50% so thu ba. Tim so thu hai?3. Tim mot phan so co mau so bang 25 , biet rang neu cong tu so voi 34 va nhan mau so voi 3 thi duoc phan so moi bang phan so da cho. Tim phan so do?4. Tim mot phan so biet rang neu cong them 4 vao tu so va giu nguyen mau so thi ta duoc phan so moi...
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1. Tim trung binh cong cua tat ca cac so tu nhien co 4 chu so khac nhau duoc viet boi bon chu so 0;3;5;7.Trung binh cong cua tat ca cac so do la?
2 .Tong cua 3 so bang 5,2. So thu nhat bang 2/3 so thu ba va so thu hai bang 50% so thu ba. Tim so thu hai?
3. Tim mot phan so co mau so bang 25 , biet rang neu cong tu so voi 34 va nhan mau so voi 3 thi duoc phan so moi bang phan so da cho. Tim phan so do?
4. Tim mot phan so biet rang neu cong them 4 vao tu so va giu nguyen mau so thi ta duoc phan so moi bang 1, con neu giu nguyen tu so va cong them 3 thi ta duoc phan so moi bang 1/2 .Tim phan so do?
5. Hay cho biet co tat ca bao nhieu so co 3 chu so ma tong co chu so cua moi so bang 4 . co tat ca bao nhieu so thoa man?
Cho 3 so thap phan trong do tong cua so thu nhat va so thu hai la 4,6 tong cua so thu hai va so thu ba la 9 tong cua so thu nhat va so thu ba la 6,8 . Tim 3 so do.
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
Tong cua bon so tu nhien la so lon nhat co bay chu so. Neu xoa di chu so hang don vi cua so thu nhat thi duoc so thu hai. So thu ba bang hieu cua so thu nhat va so thu hai. So thu nhat la tich cua so be nhat co ba chu so va so lon nhat co bon chu so. Tim so thu tu.
cho 2 so thap phan co tong la 83,49.neu so hang thu nhat gap len 2,5 lan va giu nguyen so hang thu hai thi tong moi la 130,08. tim hai so da cho
cho hai so thap phan co tong la 83,49 neu so hang thu nhat gap len 2,5 lan va giu so thu hai thi tong la 130,08 tim hai so
trung binh cong cua so thu nhat va so thu 2 la 8.5 trung binh cong co so thu 2 va so thu 3 la 8.1 trung binh cong cua so thu nhat va so thu 3 la 7.35 tim so lon nhat , cac ban nho tim gium minh nhe!!
trung binh cong cua ba so la 13,5. biet tong cua so thu nhat va so thu hai la 29,1. tong cua so thu hai va so thu ba la 24,7. hay tim ba so do.