Các câu hỏi tương tự
cho abc la so tu nhien co 3 chu so tim abc biet abc chia het cho 45 va a=b+1
tim so co ba chu so abc ; biet abc + ab + a = 432
tim so tu nhien co 3 chu so abc biet abc=(a+b+c)x11
cho ba abc co tong la 5850. trong do so a be hon so b la 15 don vi va so b be hon so c la 30 don vi . tim so c
BAI1/Cho hinh thang ABCD co day nho AB bang 10,8 m day lon DC bang 27 m noi A va C . Tinh dien tich tam giac ABC la 54m2
bai2/ Trung binh cong cua ba so la 91 tom ba so do biet so thu nhat gap doi so thu hai va so thu hai kem so thu ba 13 don vi
bai3/ Cho hinh thang ABCD co day lon CD la 20m day be =15m M la diem tren AB cach B la 5m noi M voi C Tinh dien tich hinh thangAMCD biet dien tich hinh tam giac MBC la 28 m2
28
tim so abc biet abc=ab+ba+bc+cb+ca+ac;voiabc la ba so tu nhien khac nhauva khac 0, biet a la so chan
co bao nhieu so co sau chu so khac 0 va 9 co dang la: abc abc
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 t...
Đọc tiếp
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?
1. tim A biet :A 1/2 x 1/4 x 1/8 x 1/16 x 1/32 x 1/64 x 1/128 x 1/256 x 1/512 x 1/10242. tim chu vi cua 1 hinh vuong biet neu giam canh cua hinh vuong do 5 cm thi dien tich giam di 385 cm23. co ba nhieu so co 3 chu so ma moi so deu co mot chu so 04. tong so tuoi cua 2 anh em hien nay la 30 tim tuoi em hien nay biet khi tuoi anh bang tuoi em hien nay thi tuoi anh gap tuoi em 2 lan5. 1 day nha co 40 nha so nha cua 40 nha do danhla cac so lien tiep tang dan tong cac so do la 3560. so nha cua nha c...
Đọc tiếp
1. tim A biet :
A = 1/2 x 1/4 x 1/8 x 1/16 x 1/32 x 1/64 x 1/128 x 1/256 x 1/512 x 1/1024
2. tim chu vi cua 1 hinh vuong biet neu giam canh cua hinh vuong do 5 cm thi dien tich giam di 385 cm2
3. co ba nhieu so co 3 chu so ma moi so deu co mot chu so 0
4. tong so tuoi cua 2 anh em hien nay la 30 tim tuoi em hien nay biet khi tuoi anh bang tuoi em hien nay thi tuoi anh gap tuoi em 2 lan
5. 1 day nha co 40 nha so nha cua 40 nha do danhla cac so lien tiep tang dan tong cac so do la 3560. so nha cua nha cuoi cung la bao nhieu
6. cho hinh tam giac ABC tren canh AB lay diem M, N sao cho AM = 1/3 AB. AN bang 1/4 AC dien tich BMNC la 24 cm2 tinh dien tich ABC