tim hai so biet rang neu dem thu nhat chia cho 2, so thu hai chia cho 2,5 thi duoc hai ket qua bang nhau va biet hieu cua chung bang 21,3.
tim hai so biet rang neu dem so thu nhat chia cho 3, so thu hai chia cho 5 thi duoc ket qua bang nhau va biet tong cua chung bang 346,8
tim 2 so hieu cua chung bang 126 va biet so thu nhat nhan 3 so thu 2 nhan 2 thi duoc hai tich co ket qua bang nhau
hai so tu nhien co hieu bang 178 tim hai so ay biet rang neu dem so lon chia cho so nho thi duoc thuong la 8 va duoc so su la 17 ?
trung binh cong cua 4 so la 99. Tim 4 so do, biet rang so thu nhat bot di 2, so thu hai them 2don vi, so thu ba chia cho 2, so thu 4 nhan voi 2 thi duoc 4 ket qua bang nhau
tim so chia cua mot phep chia , biet rang : so bi chia 410, so du bang 19
a) tim mot so co hai chu so va neu lay so do chia cho chu so hang don vi thi duoc thuong la 8 va du 7
b) tong cua hai so bang 196 . tim hai so do
c)tim so co 3 chu so , biet rang neu viet them mot chu so 3 vao ben phai so do thi no tang them 2217 don vi
Tim 3 so nguyen co tong bang -4, biet rang so thu nhat nhan 2, so thu hai cong voi 3, so thu 3 tru di 4 thi duoc cac ket qua bang nhau. Tim ba so do?
AI TRA LOI DUNG SE DUOC TICK 10 CAI
Tim 3 so nguyen co tong bang -4, biet rang so thu nhat nhan 2, so thu hai cong voi 3, so thu ba tru di 4 thi duoc cac ket qua bang nhau. Tim 3 so do?
AI LAM DAU TIEN, CO TRINH BAY, DAP AN DUNG, MINH SE TICK CHO 1O CAI
1. mot phep chia co tong cua so bi chia va so chia bang 72. biet rang thuong la 3 va so du la 8. tim so bi chia va so chia
2. TIm hai so tu nhioen .biet rang tich cua chung la 630 va neu them 4 don vi va mot thua so thi tich moi la 798