tim so co 2 chu so biet rang neu ta viet them vao giua so do 1 so co 2 chu so kem so phai tim mot don vi thi so moi gap 91 lan so phai tim

tim mot so co hai chu so biet rang neu viet them vao guia mot so co hai chu so kem SCT mot don vi thi dc mot so moi gap 91 lan SCT

tim mot so co hai chu so biet rang neu viet them chu do 6 vao ben phai so do ta duoc so moi hon so phai tim la 132 don vi

Tim 1 so co chu so, biet rang neu viet them vao giua so do 1 so co 2chu so kem so phai tim 1 don vi thi duoc so moigap 91 lan so phai tim

tim mot so co hai chu so biet rang neu viet them chu so 0 xen vao giua chu so hang chuc va hang don vi cua so do ta duoc so moi va neu viet them chu so hai vao ben trai so moi thi ta duoc mot so gap 6 lan so moi do

1.Cho so N la so co hai chu so chia het cho 3.Neu viet xen so 0 vao giua hai chu so do roi cong no voi hai lan chu so hang chuc cua so N ta duoc so moi gap 9 lan so N.Tim so do

2.Tong hai so thap phan la 60,1.Neu dich dau phay cua so nho sang ben phai mot hang roi dem tru di so lon thi ta duoc 219,52.Tim hai so do.

3.Tim so co hai chu so biet neu ta them so 33 vao giua hai chu so do thi duoc mot so moi gap so phai tim 89 lan.

tim mot so tu nhien co 3 chu so biet rang neu viet them chu so 7 vao ben phai so do thi duoc so moi hon so phai tim la 1222 don vi

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 tat ca cac so co 2 chu so biet rang neu viet them vao giua hai so do mot chu so 3 thi duoc mot so moi gap 11 lan so can tim