hieu hai so la 129.neu bot so lon 15 don i va them vao so be la 20 thi so be bang 3/5 so lon.tim so be ?ve so do giup minh nhe.
tong cua 2 so tu nhien bang 630.tim so be biet,neu bot so be 19 don vi va them vao so lon di 19 don vi thi so be bang ba phan tu 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.
Tong cua 2 so la 14. Neu them vao so lon 1,3don vi va bot o so be di 1,3 don vi thi so be bang 2/3so lon .Tim 2 so
hieu hai so bang 41.biet neu giamso be di 19 don vi va them vao so lon 12 don vi thi so be bang 3/5 so lon.tim so lon .
Hieu cua 2 so la 41 biet neu giam so be di 19 lan va them vao so lon 12 don vi thi so be
bang 3/5 so lon tim hai so do
hieu cua 2 so bang 125 tim so be biet,neu cung bot moi so di 18 don vi thi so be bang 2/3 so lon
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.
hieu cua hai so la 62,8 . neu tang so lon them 2,6 don vi va giam so be di 4,3 don vi thi hai lan so lon bang 3 lan so be . tim so lon