1. tinh s hinh tron co dien tich 1,2 dm...cm2
2.309/402=2014-a/512.tra loi a=...
3. tim 1 so tu nhien biet neu xoa chu so hang don vi cua no di ta dc so moi kem so phai tim 1814 don vi?
4.so tu thap phan be nhat co cac chu so khac nhau ma tich cac chu so cua so do = 64?
5. 2 kho a va b chua tat ca 325 tan thoc. biet sau khi lay ra 30 tan o kho a va 25 tan o kho b thi so thoc con lai o kho a bang 125% so thoc con lai o kho b. hoi ban dau kho a chua bao nhieu tan thoc?
bai 1 : Tim hieu cua hai so, biet rang so lon them 735 don vi va so ben them 449 don vi thi duoc hieu moi la 2000.
Bai 2 : Khi thuc hien phep tru hai so, mot ban da so y viet sai nhu sau : o so bi tru co hai chu socuoi cung la 35 da viet thanh 53 nen phep tru sai co ket qua la 1234. Tim hieu dung cu ahia so do.
Bai 3 : TIm mot so biet rang so do cong voi so lon nhat co ba chu so khac nhau roi cong tiep voi so be nhat co bon chu so khac nhau thi duoc so be nhat co nam chu so.
Bai 4 ; Cho ba chu so tu nhieu A ; B ; C. Biet rang tong cua A va B la 492 ; tongg cua B va C la 936 ; tong cua C va A la 714. Tim ba so do.
Bai 5 : HAi kho chu atat ca 2500 tan thoc. Sau khi lay ra o moi kho so tan thoc nhu sau. thi kho thu nhat con 800 tan va kho thu hai con 500 tan. Hoi luc dau moi kho chua bao nhieu tan thoc?
mot hinh thang co so do trung binh cong 2 day bang 24.5.Biet neu tang do dai dfay lon them 5 cm thi dien tich hinh thang do se tang them 20cm2
hinh chu nhat co dai gap 2 lan rong biet S bang 288 cm2 .Tinh chu vi hinh chu nhat do la .....cm
luc dau kho thoc A chu nhieu hon kho B la 15 tan thoc ,biet sau khi xuat di 1/4 so thoc o kho a va 1/5 so thoc o kho B thi so thoc con lai cua hai kho bang nhau .Hoi luc dau kho A co bao nhieu
Tinh tuoi An hien nay biet ,truoc day 3 nam tuoi AN BANG 20% TUOI BO an ,con sau 4 namnua toi an bang 1/3 tuoi bo An
2 kho a va b chua tat ca 325 tan thoc biet sau khi lay ra 30 tan o kho a va 25 tan o kho b thi so thoc o kho a =125% kho b.
Ban dau kho chua bao nhieu tan thoc
Hai kho thoc A & B chua tat ca 465 tan thoc, biet khi xuat di 1/4 so thoc o kho A & 1/5 so thoc o kho B thi so thoc con lai o 2 kho thoc = nhau. Hoi luc dau kho B chua bao nhieu tan thoc.
chieu nay mk se jai
ai tick mk, mk tick lai.
hai kho chua 465 tan thoc sau khi xuat di 1/4 so thoc o kho A va1/5 so thoc o kho B thi so thoc con lai o hai kho bang nhau hoi luc dau kho B chua bao nhieu tan thoc
2 kho chứa 325 tấn sau khi lấy ra 30 tấn o kho a va la ra 25 tan p kho b thi so thoc con lai o kho b bang 125% kho a hoi ban dau kho a co bao nhieu tan thoc
co 2 kho thoc kho A chu nhieu hon kho B la 50 tan biet saU KHI chuyen tu kho A sang Kho B 10 tan thi so thoc con lai trong kho a bang 4/3 so thoc trong kho B vay luc dau kho A chua
co 2 kho thoc. kho thu nhat chua 48.5 tan,kho thu 2 chua 35 tan.hoi cung phai lay ra o moi kho bao nhieu tan thoc de so thoc con lai trong kho b bang 50% so thoc con lai trong kho a
hai kho co 270 tan thoc ,lay ra 1/4 so thoc kho A va 2/5 so thoc kho B thi phan con lai o hai kho bang nhau .Tinh so thoc moi kho
