Question

tbc cua 3 so la 193.806 neu chuyen dau phay so thu 1 sang ben phai 1 chu so ta duoc so thu 3. Neu chuyen dau phay so thu 1 sang trai 1 hang ta duoc so thu 2 . hoi so thu 3 hon so thu 2 bao nhieu don vi

 

Answer 1

tong 3 so la  193.806 x3 =581.418

neu chuyen dau phay so thu 1 sang phai 1 chu so thi duoc so thu 3 nen so thu 3 gap 10 lan so thu 1

neu chuyen dau phay sang trai 1 chu so thi duoc so thu 2 nen so thu 1 gap 10 la nan so thu 2

ta co bieu thuc

st1 + st1 : 10 + st1 x 10 =581.418

st1 + st1 x 1phan10 + st1 x 10 =581.418

st1 x ( 1 +1phan10+10 ) = 581.418

st1 x111phan10 =581.418

st1 =581.418 :111phan10

st1 =52.38

st3 = 52.38 x 10 =523.8

st2 =52.38 : 10 =5.238

so thu 3 hon so thu 2 la 523.8 - 5.238 = 5232.762

Answer 2

dng khong may ban

Answer 3

tu tu cho 3 hon 2 phai bang 518.562