Thuc hien phep tinh : CM + XXVIII
Mink **** cho
thuc hien phep tinh
C=85+87+89+......+2013+2015
(155.155-155.41)/114 .thuc hien phep tinh
thuc hien phep tinh:
2013.20122012-2012.20132013
thuc hien phep tinh :
a) 28/11 . 21/22 . 9
thuc hien phep tinh:
236 : 3 + 64 : 3
1159 : 125 - 159 : 125
1,thuc hien phep tinh hop li
a,187+[923-(923+887)]
B, 39.187+30^2-78.39
giup minh giai nhung thuc hien phe tinh nha
thuc hien phep tinh:-38.(25-4)+25.(-4+38)
thuc hien phep tinh:-39.(5-99)+99.(10-99)
