Hieu cua hai so la 402. Biet so thu nhat bang 7/4 so thu hai. Tim hai so do.
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.
biet tong 20% cua so thu nhat va 50% so thu hai la 12,64 va biet hieu cua hai lan so thu nhat va so thu hai la 12,4 tim hai so do
giai ra giup minh
hai so co hieu bang 13,8. biet 40% so thu nhat bang 1/3 so thu hai. tim so thu hai
hieu cua hai so la0,14.tim hai so biet so thu hai kem 5 lan so thu nhat la 18,1 va so thu nhat >so thu hai
hieu hai so la 19,5 biet 3 phan 4 so thu nhat bang 3phan 5 so thu hai tim so thu hai
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.
biet hieu cua hai so la 308 neu lay so thu nhat nhan voi 3 va so thu hai nhan voi 4thi hieu cua hai so se tang them 154 don vi tim so thu nhat
Cho 3 so tu nhien trong do 2 lan so thu nhat bang 3 lan so thu hai va bang 5 lan so thu ba. Tim moi so biet hieu cua so lon nhat va be nhat la 72.