Các câu hỏi tương tự
Bai 1 : a) Tim abcd biet : a x bcd 1001 b) Tim ab ; biet ab x aba ababBai 2 Tim so co hai chu so, biet rang neu viet them chu so 6 vao ben trai so da cho thi duoc so moi gap 7 lan so cu.Bai 3: Tim so co ba chu so, biet rang neu viet them chu so 3 vao ben trai so da cho thi duoc so moi gap 7 lan so doBai 4 :a) Tim cac so a7b cung chia het cho 5 va 9 b) Tim cac aso 1ab cung chia het cho 5 va 3Bai 5 : Tim so co hai chu so, biet rang so do chia cho hang don vi cua...
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Bai 1 :
a) Tim abcd biet : a x bcd = 1001 b) Tim ab ; biet ab x aba = abab
Bai 2 Tim so co hai chu so, biet rang neu viet them chu so 6 vao ben trai so da cho thi duoc so moi gap 7 lan so cu.
Bai 3: Tim so co ba chu so, biet rang neu viet them chu so 3 vao ben trai so da cho thi duoc so moi gap 7 lan so do
Bai 4 :
a) Tim cac so a7b cung chia het cho 5 va 9 b) Tim cac aso 1ab cung chia het cho 5 va 3
Bai 5 : Tim so co hai chu so, biet rang so do chia cho hang don vi cua no thi duoc thuong la 6, du 5.
Bai 6: Cho so co hai chu so trong do chu so hang don vi la 7. Tim so da cho, biet rang neu chia so do cho tong cac chu so cua no thi duoc thuong la 5 va du 12.
tim cac chu so a,b,c biet: 0,a+a,b+ab,c=bc,b ( cac chu so khac nhau bieu dien cac chu so khac nhau)
Cau 1 : Tim ab ; biet
a ) ab x 5 = 2ab b) ab = 4ab / 9
Cau 2 : Tim ab, biet : a x2 = b x 5
Dau nhan la x , con dau / la chia nhe moi ngoi. Nho giai ho minh som nhe
1: tim a,b biet
a,b=b,a*3+1,3
2: tim cac chu so a,b,c,d biet:
a=b+1
(a,b+1,5)*c.d=14,4
(a,b+0,5)*c,d
tim a,b,c biet
0,a+a,b+ab,c=bc,b
giup toi voi
tim cac so a,b,c,d khac nhau biet rang abc x c=dac
tim a ; b ;c ;d biet
ab,cd-a,bcd=11,106
tim a,b biet (chu y :a,b la so thap phan)
a,b * 9,9=aa,bb
tim so a biet ab + ba = 154 va biet a-b=2
so a la ....
cho 2 phan so 6/7 va 2/9 hay tim p/s a/b sao cho khi them ab/ vao 2 p/s da cho thi ty so cua 2 p/s la 3cho 2 phan so 6/7 va 1/9 hay tim p/s a/b sao cho khi them a/b vao 1/9 va bot a/b o 6/7 thi ta duoc 2 p/s co ty so la 3viet duoc bao nhieu p/s ma tong cua tu so va mau so 2012 co bao nhieu p/s nho hon 1 bang 1 lon hon 1tim hai so chan co tong la 2100 biet giua chung co 18 so chan khac tim 2 so tu nhien biet tong cua hai so nay la 2019 giua chung co tat ca 20 so tu nhien khacai nhanh minh tick 5...
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cho 2 phan so 6/7 va 2/9 hay tim p/s a/b sao cho khi them ab/ vao 2 p/s da cho thi ty so cua 2 p/s la 3
cho 2 phan so 6/7 va 1/9 hay tim p/s a/b sao cho khi them a/b vao 1/9 va bot a/b o 6/7 thi ta duoc 2 p/s co ty so la 3
viet duoc bao nhieu p/s ma tong cua tu so va mau so 2012 co bao nhieu p/s nho hon 1 bang 1 lon hon 1
tim hai so chan co tong la 2100 biet giua chung co 18 so chan khac tim 2 so tu nhien biet tong cua hai so nay la 2019 giua chung co tat ca 20 so tu nhien khac
ai nhanh minh tick 5 lan giai han bai giai ra nha
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?