Tim 2so co hieu bang 393, biet rang neu xoa c/s cuoi cua so lon thi duoc so be.
Ban thong cam khong viet dau duoc !!!!!!!!!!
tim hai so co hieu 385 biet rang neu xoa di chu so 7 o hang don vi cua so lon thi duoc so be
tim 2 so biet rang so lon la so co 4 chu so neu xoa di chu so 5 thuoc hang nghin cua so lon thi duoc so be = 1/9 so lon
Bai 1 : Tong cua hai so la 2000. Neu so hang thu nhat them 135 don vi va so hang thu hai bot 531 don vi thi duoc tong moi la bao nhieu?
Bai 2 : Tim tong hai so biet rang neu so hang thu nhat bot di 246 don vi va so hang thu hai them 642 don vi thi duoc tong moi bang 2010.
Bai 3 : Hieu cua hai so la 1000. Neu so lon them 235 don vi va so be bot 200 don vi thi duoc hieu moi la bao nhieu?
Bai 4 : Hieu cua hai so bang 1234. Neu so lon bot 234 don vi va so be them 456 don vi thi duoc hieu moi la bao nhieu?
Bai 5 ; Tim hieu cua hai so, biet rang so lon va so be cung bot di 100 don vi thi duoc hieu moi la 1000.
hieu cua 2 so la 489.tim 2 so biet neu xoa chu so 3 o hang don vi cua so lon thi duoc so be
tim hai so co 2 chu so biet rang tong cua hai so do la 98 neu gep so lon vao ben trai va ben phai cua so be deu duoc cac so co 4 chu so ma hieu cua chung bang 1386 tim hai so do
tim 2 so co tong la 99 biet rang neu xoa chu so 0 o so lon thi duoc so be
Hieu hai so bang 3780. Tim so be, biet rang neu viet them chu so 0 vao ben phai so be thi duoc so lon.
TRA LOI CAU HOI SAU:
cau1:1/3 cua 186 bang
cau2:5/4cua 2012 bang
cau3:3/4 cua 192 bang
cau4:hieu hai so bang 246 so be bang 3/5 so lon vay so lon la
cau5:tong hai so bang 222 biet rang neu cung them moi so 9 don vi thi so lon gap doi so be tim so lon
cau6:cho hinh chu nhat co chu vi bang 104cm biet neu giam chieu dai di 2cm va tang chieu rong len 2cm thi no cho thanh hinh vuong so do chieu dai hinh chu nhat la
cau7:tong 2 so bang 260 biet neu cung bot moi so di 6 don vi thi so lon gap 3 lan so be vay so be la
