tim mot so biet 2/3 cua no bang 7,2
tim mo so biet 1 3/7 cua no bang -5
Tim 3 phan so biet tong cac nghich dao cua chung la mot so tu nhien?
tim so co 3 chu so biet rang nghich dao cua tong 3 chu so do bang 1 phan 1000 so da cho
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 mot so co 2 chu so biet rang so do gap 12 lan hieu cac chu so cua no
tim 1 so co 2 chu so . biet so do la lap phuong cua so tu nhien va tong cac chu so cua no bang binh phuong cua mot so tu nhien
cho 2 phan so co tong bang 2015 lan tich cua chung
tinh tong cac phan so nghich dao cua chung
tim 2 so nguyen duong sao cho tong nghich dao cua chung bang 2
tim mot so co 2 chu so biet so do gap 5 lan tong cac chu so cua no