de tap the duc gia gio , khoi lop 4 cua mot truong tieu hoc xep thanh 9 hang doc va khi can thay doi doi hinh khoi lop 4 trien khai thanh 5 hang ngang thi so hoc sinh toan khoi lop 4 cung vua du cho cac hang . Hoi khoi lop 4 co bao nhieu hoc sinh ,biet rang so hoc sinh khoi lop 4 la mot so lon hon 160 va be hon 200 ?
trong buoi dong dien the duc cac ban hoc sinh xep thanh cac hang nhu nhau biet 4 hang co 64 ban hoi 6 hang co bao nhieu ban
Mot san van dong hinh chu nhat khi ve tren ban do voi ti le 1:1000 thi co chu vi baang 40cm .Hoi chieu dai thic te cua san van dong la bao nhieu , biet chieu rong bang 80 m
Hoi thi su ca hoc duong cap Quan truong TH banh van tran co 75 hoc sinh tham gia voi hai tiet muc ca kich hoi nghi dien hong va le qui don trong do 4 phan 5 so hoc sinh tham gia tiec muc hoi nghi dien hong hoi so hoc sinh tham gia tieu muc la bao nhieu
1.viet cac so tu 100den 999 phai dung bao nhieu chu so 0?
2.mot phep tru co tong so bi tru va so tru la 450.so tru gap 4 lan hieu.tim so tru
3.mot hinh chu nhat co dien tich 720m va chieu rong bang 4/5 chieu dai.tim chu vi
4.trong dot thi ''do vui de hoc'' co 6 lop tham gia,moi lop co so hoc sinh tham gia bang nhau,cac em du thi deu duoc 10diem va 8 diem.tong so điem dat duoc cua cac lop la 160 diem.hoi co bao nhieu ban dat duoc 8 diem?
co bai giai ra luon nhe cam on cac ban!
ban an phai tim tat ca cac so co 3 chu so lon hon 500 ma tong cac chu so cua moi so do deu bang 12 dong thoi chu so hang don vi bang trung binh cong cua chu so hang tram va hyang chuc hoi ban an tim duoc nhieu nhat bao nhieu so thoa man yeu cau
Ban An phai tim tat ca cac so co 3 chu so lon hon 500 ma tong cac chu so cua moi so do deu = 12, dong thoi chu so hang don vi = trung cong cua chu so hang tram va hang chuc. Hoi ban An tim duoc nhieu nhat may so thoa man yeu cau?
2 ban hien va van co 90000 dong .neu hien dua cho van 2/7 so tien cua minh thi 2 ban co so tien bang nhau . Hoi luc dau moi ban co bao nhieu tien
Lop 4a truong tieu hoc mua xuan xep hang 2 , hang 3 , hang 4 deu duoc mot so hang khong thua ban naoneu lay tong cac hang xep duoc do thi duoc 39 hang . Hoi lop 4a co bao nhieu ban