viet day so chan100,102,104,...,390
hoi chu so 2 duoc viet bao nhieu lan?
Nguoi ta viet cac so chan thanh 1 day 2468...Hoi chu so thu 2000 la bao nhieu
khi viet tat ca so tu nhien tu 1 den 100
a)Chu so 0 duoc viet bao nhieu lan?
b)Chus so 1 duoc viet bao nhieu lan?
c)Cac chu so:2;3;...;9,moi chu so duoc viet bao nhieu lan?
ban lam danh so trang sach cua mot cuon sach day 284 trang bang day so chan 2 ,4,6,8 vv.biet moi chu so viet mat mot giay hoi ban lam can bao nhieu phut de danh trang sach b/ chu so thu 300 ma ban lam viet la chu so nao
- tim so chu so chan co 4 chu so
- viet tat ca cac so tu 100 den 999phai dung bao nhieu chuvso 9
-co bao nhieu so le co 3 chu so
- viet 1000 sdo tu nyhien dau tien hoi chu so 3 cco mat bao nhieu lan
-viet tap hop cac so tu nhien co 2 chu so trong do a ) chu so hang chuc nho hon hang don vi la 4 b) chu so hang chuc gap 3 lan chu so hang don vi c) chu so hang chuc nho hon chu so hang don vi ( tong 2 chu so = 12)
1, viet them 3 so vao day so sau
1,8,27,64.............
1,5,10,17,26...................
bai nay la cua em hang xom ma bay gio len hoi nen hoi cho lun
2,co bao nhieu so chan co 2 chu so ? tinh tong cac so chan co 2 chu so
bai 1 lop 6 ,bai 2 lop 4
dung 3 chu so 1,5,6 co the viet duoc bao nhieu so co 3 chu so ,co the viet bao nhieu so co 3 chu so phan biet ̣ ,<minh bi loi nen ko viet tieng viet dc , hoi kho doc , sorry>
pho hang ngang la 1 trong nhung day pho co Ha Noi,cac nha khoa hoc danh so lien tuc day so le la1,3,5,... toi 61,day so chan2,4,6,...toi 64
a,ben so nha chan trong 1 vuong goc nho chu tich ho chi minh da gui ban tuyen ngon doc lap khai sinh nuoc viet nam dan chu cong hoa ngoi nha co can phong la so 24 de tu dau voi so 2.hoi ngoi nha nay co so nao
b,ben so nha le chu so nao chua duoc dung,chu so nao duoc dung nhieu nhat
c, phai dung tat ca bao nhieu chu so de biet so nha cua day pho nay
bai 1 : ban nam danh so sach trong 1 cuon sach day 284 trang = cac so chan 2 , 4 , 6 , 8 ,..........
a, biet moi chu so viet het 1 giay . hoi ban nam can bao nhieu thoi gian de danh so trang trong cuon sach ?
b , chu so thu 300 cua day la chu so nao ?