phép trừ thì cũng bằng nhau luôn mà
phép trừ thì cũng bằng nhau luôn mà
trong phep cong co tong bang 69,neu giu ngyen mot so hang va tang so hang kia them 26 don vi thi tong moi la
co bao nhieu so co 3 chu so khac nhau ma tong cac chu so hang tram va hang chuc bang 5
trong mot phep cong co tong bang mot so hang thi so hang kia la:1,0,10
viet phep co tong bang 1 so hang
viet 2 phep tinh cong ma tong cua no co 2 so hang la so tron chuc giong 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:....
tim so be nhat co hai chu sokhac nhau va co tong cac chu so bang 13
bai 4 viet tat ca cac so co ba chu so ma chu so hang tram va chu so hang don vi deu bang 1 :
So be nhat co 3 chu so khac nhau ma, thuong cua phep chia chu so hang tram cho chu so hang chuc bang thuong cua phep chia chu so hang chuc cho chu so hang don vi...............