viet tat ca cac so co hai chu so ma tong cac chu so cua so do bang 15?
tong cua hai so la 550. do ban hoc sinh viet nham chu so 3 o hang tram thanh chu so 6 va viet nham chu 4 so o hang chuc thanh chu so 7 .em xem ban ay da tinh duoc ket qua bao nhieu?
viet phep cong co cac so hang bang nhau va tong bang nhau
Viet 4 chu so giong nhau co tong bang 36
hay viet moi so 6.12.20 thanh tich cua hai thua so lien nhau
tong cu hai so bang 15,hieu cua chung bang 1.tim hai so do
tong cua so thu nhat va so thu 2 bang 37. Tong cua so thu 2 va so thu 3 bang 42.Biet tong cua 3 so bang 56. Tim ba so do.
viet 8 thanh tich cua 3 so khac nhau ( viet 6 cach khac nhau )
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:....