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1,tim 1 ps bang ps 2/5 biet neu lay tu so cua ps do cong voi 45 va giu nguyen mau so thi duoc 1 ps moi bang ps 13/202,tinh dien tich toan phan cua hinh hop chu nhat co chieu dai 15cm,chieu rong 12cm,chieu cao 9,5cm.3,bay gio la 2 gio.hoi sau it nhat bao nhieu lau nua thi kim gio va kim phut cua dong ho trung nhau.4,vao nam tuoi chau bang 1/6 tuoi chau hien nay thi ong cua chau 60 tuoi,biet tong so tuoi cua 2 ong chau hien nay la 82 tuoi,tuoi chau hn la...5,tim 1 stn biet neu xoa chu so hang don...
Đọc tiếp
1,tim 1 ps bang ps 2/5 biet neu lay tu so cua ps do cong voi 45 va giu nguyen mau so thi duoc 1 ps moi bang ps 13/20
2,tinh dien tich toan phan cua hinh hop chu nhat co chieu dai 15cm,chieu rong 12cm,chieu cao 9,5cm.
3,bay gio la 2 gio.hoi sau it nhat bao nhieu lau nua thi kim gio va kim phut cua dong ho trung nhau.
4,vao nam tuoi chau bang 1/6 tuoi chau hien nay thi ong cua chau 60 tuoi,biet tong so tuoi cua 2 ong chau hien nay la 82 tuoi,tuoi chau hn la...
5,tim 1 stn biet neu xoa chu so hang don vi cua no di thi ta duoc so moi kem so phai tim la 1808 don vi.
Tim mot phan so 3/4 va biet neu lay tu so cua phan so do cong voi 5 thi duoc phan so bang phan so 4/5 ?
tim mot phan so bang 3/4 va biet neu lay ti so cua phan so do cong voi 5 thi duoc phan so bang phan so 4/5?
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...
Đọc tiếp
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?
tim mot phan so co tong cua tu so va mau so la 44,biet neu lay tu so cong voi 6 va giu nguyen mau so thi duoc phan so moi bang 1.
tim mot phan so bang phan so 9/10 va biet neu lay tu so cua phan so do tru di 15 va giu nguyen mau so thi duoc phan so moi bang phan so 3/4?
tim 1 phan so biet neu giu nguyen mau so cong tu so voi 4 thi duoc phan so moi bang 1 neu giu nguyen tu so cong mau so voi 1 thi duoc phan so moi bang 1/2
1) Tim 1 so sao cho khi tu so cua PS 37/50 tru di so do va giu nguyen MS thi duoc ps moi la 1/2
2)Tim 1 SO SAO CHO khi tu so cua PS 13/16 + voi so do va giu nguyen MS thi duoc PS22 moi la 5/9
Tim 1 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 vao mau so thi ta duoc phan so moi bang 1/2