20 = 2 + 2 +2 +2 + 2 + 2 + 2 + 2 + 2 + 2
k nhé
20 = 2 + 2 +2 +2 + 2 + 2 + 2 + 2 + 2 + 2
k nhé
viet tat ca cac so co hai chu co tong cua chu so hang chuc va chu so hang don vi la 8
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?
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 :
Bai 4
Viet tat ca cac so co 3 chu so ma chu so hang tram va chu so hang don vi deu = 1
viet 2 phep tinh cong ma tong cua no co 2 so hang la so tron chuc giong nhau
viet phep cong co cac so hang bang nhau va tong bang nhau
cho cac so 8,.9,10,11,12 . sao cho tong 3 so o hang ngang , cot doc bang 30. vay so o giua la......
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:....
Tong cua 2 so la so be nhat co ba chu so,so hang thu nhat la 57.Vay so hang thu hai la?