cho 50 diem [co 3 diem thang hang voi nhau] noi 2 diem ta duoc 1 duong thang hoi noi cac diem voi nhau ta duoc bao nhieu duong thang
cho 50 diem [co 3 diem thang hang voi nhau] hai diem noi lai thi duoc 1 duong thang hoi co bao nhieu duong thang
cho n diem ko co 3 diem thang hang , cu hai diem ve duong thang co 10 doan tat ca co bao nhieu diem
moi chuyen xe khach cho duoc 40 nguoi ke ca nguoi lai xe hoi co 400 khach thi can it nhat bao nhieu xe de cho het so khach do
Truong Tieu hoc Thanh Cong co 35 lop.Trong do co 16 lop, moi lop co 35 hoc sinh; so lop con lai, moi lop co 32 hoc sinh.Hoi Truong Tieu hoc Thanh Cong co tat ca bao nhieu hoc sinh?
Mot khu dat hinh chu nhat co chieu dai 62m, chieu rong kem chieu dai 8m.Hoi can bao nhieu met rao de rao kin xung quanh khu dat nay?
nguoi ta pha son do voi son trang theo ti le 3:1hoi co bao nhieu lit son do de pha biet rang sau khi pha duoc tat ca 28 lit son
Mot thang co 20 lan kiem tra sau 10 lan kiem tra ban An thay diem trung binh cua minh la 7 diem . hoi con 10 lan kiem tra nua ban An phai dat tat ca bao nhieu diem de diem trung binh la 8
bai 1
a} mot phep chia co so chia la 49 so du la 38. hoi
phai them vao so bi chia it nhat la bao nhieu de thuong tang the 1 don vi ?
co the them vao sbc nhieu nhat la bao nhieu de thuong tang 1 don vi 2 don vi
co the giam so bi chia it nhat bao nhieu don vi de thuong giam 1 don vi
giam sbc nhieu nhat bao nhieu don vi de thuong giam 1 don vi
b} tim SBC va SC cua mot phep chia biet SBC gap 11 lan thuong va thuong bang 5 lan SC
c} hieu hai so la 60 neu ta cong them 18 don vi vao moi so thi so lon gap 3 lan so be em hay tim hai so do
d} tich hai so la 645. neu ta them 5 don vi vao so thu hai thi tich moi la 860 tim hai so do
bai 2
a} mot khu vuon hinh chu nhat chieu dai hon chieu rong 40m neu mo rong them moi ben 10m thi chieu dai gap doi chieu rong tinh dien tich khu vuon
b} hieu cua hai so la 140 neu ta tang so bi tru len 5 lan va giu nguyen so tru thi hieu moi la 1454 tim 2 so do
giai tat nhe ban nao giai thanh bai giai ma giai tat thi min se tich cho tat ca ban do
dung quen ket ban voi minh nha
minh dang can gap mong cac ban giup cho
lan va cuc gap duoc 45 chiec thuyen neu lan gap duoc them 5 chiec thuyen thi lan nhieu hon cuc la 14 chiec hoi moi ban gap duoc bao nhieu chiec thuyen
tim 2 so co tong la 142 neu lay so lon tru so be roi cong voi tong cua chung thi duoc 180
an va binh co 120 quyen vo neu an cho binh 20 quyen vo thi binh co it hon an 16 quyen vo hoi moi ban co bao nhieu quyen vo
1 hinh chu nhat co 2 lan rong hon lan chieu dai12cm hai lan chieu dai lai hon hai lan chieu rong 16 cm tinh chu vi hinh chu nhat do
hung va tuan co tat ca 56 vien bi neu nam cho cho hung vien bi thi so bi cua 2 ban bang nhau hoi luc dau moi ban co bao nhieu vien bi
