co bao nhieu so co 3 chu so khac nhau ma tong cac chu so hang tram va hang chuc bang 5
Co bao nhieu so co 3 chu so tron chuc ma hieu cua so hang tram va hang chuc bang 2?
viet so co ba chu so biet chu so hang tram la 1 chu so hang chuc hon chu so hang tram 2 don vi nhung kem chu so hang don vi 3 don vi
em hay tim so co ba chu so ma hieu cua chu so hang tram va chu so hang chuc la 0 con hieu cua chu so hang chuc va chu so hang don vi bang 9
1/ tinh : 1 giờ : 3= ...phút?
2/ lop 2a co 4 ban; lop 2b co 5 ban du thi violypic cap thanh pho . Cac ban cua hai lop bat tay chuc mung nhau moi khi di moi nguoi mot lan. Hoi co tat ca bao nhieu cai bat tay?Biết rằng các bạn trong cùng lớp ko bat tay nhau.
3/ so be nhat co 3 chu so khac nhau cua phep chia chu so hang tram cho chu so hang chuc bang thuong cua phep chia chu so hang chuc cho hang don vi la so.......
4/ cho day so :0,1,2,3,6,11,...So thich hop tiep theo cua day so do la:...
5/ so lon nhat co 3 chu so khac nhau ma tong cac chu so cua so do bang 21la:....
hay cho biet co tat ca bao nhieu so co 2 chu so ma 2 chu so cua moi so do kem nhau 6 don vi
Tim so co 3 chu so biet hieu cua chu so hang tram va hang don vi bang o,hieu cua chu so hang chuc va don vi bang 8
tim 1 so biet so do gap 3 an chu so hang don vi va gap 4lan chu so hang tram .hoi co bn so
hay cho biet co tat ca bao nhieu so co hai chu so ma tong hai chu so cua so do khong be hon 15