Baif 1: Co 7 con trau, so bo nhieu hon so trau la 28 con. Hoi so trau bang mot phan may so bo?
Bai 2: Dan vit co 48 con, trong do co 1/8 so vit dang boi o duoi ao. Hoi tren bo co bao nhieu con vit?
nam 2014 an 9 tuoi tuoi an bang 1/4 tuoi bo hoi nam tong so tuoi cua bo va cua an bang 55 tuoi la nam nao?
cho so 45 so do se thay doi nhu the nao neu ?
a] neu soa bo so bo so 5 trong so 45 ta con lai so 4
b] neu soa bo chu so 4 trong so 45 ta con lai so 5
nam 2014 an 9 tuoi , tuoi an = 1/4 tuoi bo . Hoi nam tong so tuoi cua bo va an = 55 tuoi la nam nao ?
giai = loi giai phep tinh nha !
ban a sau khi gia 1 phep tinh thi tim duoc 1 hieu la 345. sau khi tang so bi tru len 8 don vi va giam so tru di 5 don vi thi hieu do thay doi nhu the nao?
hieu hai so la 55.neu them vao 17va giu nguyen so bi tru thi hieuhai so do thay doi nhu the nao ?tinh hieu so do
Môt sô A khi chia cho 7 co so du la 5 .hoi muon phep chia tro thanh phep chia het ma thuong khong doi thi phai thay doi A nhu the nao ?.muon phep chia tro thanh phep chia het ma thuong tang them 1 don vi thi phai thay doi A nhu the nao?
cay nao cang dot nhieu cang dai?
co be quang khan do doi non mau gi?
doreamon co mau xanh va mau trang , hoi mau nao nhieu nhat?
chong cua ong minh la ai?
chong cua me minh la ai?
so nao la so be nhat co 6 chu so