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.
Tim hai so biet so thu nhat bang 2/5 so thu hai. Biet rang neu them vao so thu nhat 13 don vi va bot o so thu hai di 8 don vi thi hieu cua chung la 6.
neu chuyen so thu nhat sang so thu hai 7 don vi thi so thu hai lon hon so thu nhat 20 don vi va ti so cua hai so do la 7/13.tim hai so do
nho ghi loi giai nha
hai so thap phan co tong bang 88.8 . neu them vao so thu nhat 5.4 don vi va bot di o so thu hai la 7 don vi duoc thi so thu nhat se gap 4 lan so thu hai
1.tong cua ba so la 615.biet so thu hai hon so thu nhat 30 don vi nhung lai kem so thu ba 15 don vi.
Vay so thu nhat la:
2.Tong cua hai so la 222. biet rang neu cung them vao moi 9 don vi thi so lon se gap doi so be. So lon la:
3.{2012nhan 99-1006nhan 18} nhan 2013=
tong cua hai so la 64 ,8 sau khi them so thu lon1,7 don vi va bot so be di 1,7 don vi thi so be bang 3/5 so lon. tim hai so ban dau
Tong cua ba so la so lon nhat co ba chu so. Neu lay so thu nhat chia cho so thu hai thi duoc thuong la 5, du 3. So thu nhat hon tong cua hai so kia la 7 don vi. So thu nhat hon so thu hai la ?
Tong cua 4 so tu nhien la so lon nhat co hai chu so .Neu xoa di chu so o hang don vi cua so thu nhat thi duoc so thu hai .So thu ba = hieu cua so thu nhat va so thu hai .So thu nhat la tich cua so be nhat co ba chu so va so co bon chu so .Tim so thu tu .
tong cua 3 so la 2010 so thu nhat lon hon tong 2so kia la 10 neu bot so thu 2 di 100 don vi thi duoc so thu 3. Tim so thu 3