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Khoi lop 6 cua 1 truong co 400 HS. Trong do so HS gioi chiem 3/8. Tong so HS gioi do, so HS nu chiem 40%. Tinh so hoc sinh nu cua khoi 6 dat loai gioi
MOT TRUONG THCS CO 1200HS . TRONG DO SO HS KHOI 6 CHIEM 28PHAN TRAM, SO HS KHOI 7 BANG 27/28SO HS KHOI 6 . SO HS KHOI 9 BANG 4/5 4/5 SO HS KHOI 8
TINH SO HS MOI KHOI
TI LE SO HS KHOI 8 VOI SO HS TOAN TRUONG LA BAO NHIEU
so hs khoi 6 cua truong co nhieu hon 250 va it hon 400 hoc sinh .neu so hs xep thanh hoang 18,24 deu du 2 em. hoi so hs khoi 6 la bao nhieu ba, biet rang so hs khoi 6 la boi cua 5
Khoi lop 6 o mot truong hoc co 4 lop a,b,c,d.Hs lop 6a=1/5 hs khoi 6 va bang 8/9 hs lop 6b.hs lop 6c= 11/9 so hs lop 6b va it hon hs lop 6d la 5 hs.Tinh so hs khoi 6.
1,hk1 so hsg lop 6a =1/4 so con lai.cuoi ki 2co them 2 hsg nen so hsg=1/3 con lai .hoi lop 6a co bn hs
2,khoi 6 cua mot truong co 300hs,trong do co 40 hsg trong so hsg do so nu chiem 2/3 .tinh so hs nu cua khoi 6 dat loai gioi
so hs khoi 6 o mot truong la mot so tu nhien lon hon 300 va nho hon 400. Moi lan xep hang 4, hang 5 hay hang 6 deu vua du .Tinh so hs khoi 6 truong do
a) Tim UCLN va BCNN cua hai so 1200 va 2250
b) So HS khoi 6 cua mot truong trong khoang tu 900 den 1000 HS . Khi xep hang 12, 15 , 20 de thua 6 HS , nhung xep hang 7 thi vua du . Tinh so HS khoi 6 cua truong do .
So hs khoi 6 cua 1 truong thcs khi xep hang 12,hang 20 deu du 7 hs.Tinh so hs khoi lop 6 cua truong do biet so hs la mot so tu nhien co 3 chu so lon hon 750
1.hs khoi 6 cua 1 truong lam bai kiem tra chat luong mon toan .ket qua chi co nhu sau:trung binh la 50% tong so bai.trong so cac bai con lai kha chiem \(\frac{4}{8}\)va gioi la 20 bai.hoi nha truong co bao nhieu hoc sinh khoi 6