1.cho mot so co hai chu so co tich hai chu so la 15 . Hoi tong cac chu so cua so do la bao nhieu
tong cua mot so co 3 chu so va 1 so co 2 chu so la mot chu so co 4 chu so. biet hai so hang va tong khong thay doi gia tri khi ta doc so do tu trai qua phai hoac tu phai qua trai. tim so co 3 chu so tren !
Tong hai so la so lon nhat co hai chu so, hieu hai so la so be nhat co hai chu so. Tim hai so do
tong cua hai so la so lon nhat co bon chu so biet mot so hang cua tong la so nho nhat co ba chu so tim so hang con lai
tim mot so tu nhien co hai chu so , biet rang tong cac so do voi cac chu so cua no la 103
cac ban oi giup minh voi
co bao nhieu so co 5 chu so khac nhau chia het cho 5 ?
tu va mau so cua mot phan so (nho hon 1) la hai so le lien tiep co tong bang 32 .Tim phan so do ?
chu vi cua mot hinh tam giac la 72,33cm. tong cua canh thu hai la 6,85 cm. tinh do dai canh thu hai cua hinh tam giac ?
bai 1 : Tim hieu cua hai so, biet rang so lon them 735 don vi va so ben them 449 don vi thi duoc hieu moi la 2000.
Bai 2 : Khi thuc hien phep tru hai so, mot ban da so y viet sai nhu sau : o so bi tru co hai chu socuoi cung la 35 da viet thanh 53 nen phep tru sai co ket qua la 1234. Tim hieu dung cu ahia so do.
Bai 3 : TIm mot so biet rang so do cong voi so lon nhat co ba chu so khac nhau roi cong tiep voi so be nhat co bon chu so khac nhau thi duoc so be nhat co nam chu so.
Bai 4 ; Cho ba chu so tu nhieu A ; B ; C. Biet rang tong cua A va B la 492 ; tongg cua B va C la 936 ; tong cua C va A la 714. Tim ba so do.
Bai 5 : HAi kho chu atat ca 2500 tan thoc. Sau khi lay ra o moi kho so tan thoc nhu sau. thi kho thu nhat con 800 tan va kho thu hai con 500 tan. Hoi luc dau moi kho chua bao nhieu tan thoc?
tong cua hai so la so nho nhat co bon chu so neu lay so lon chia so nho duoc thuong la so lon nhat co mot chu so tim so lon
tim mot so co hai chu so biet rang so do gap 7 lan tong cua no va chu so hang chuc hon chu so hang don vi la 4