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- THCS Lê Danh Phương


1, a , 25 x 10 x 10 x 4 =????
=(25.4).(10.10)=100.100=100001, a , 25 x 10 x 10 x 4 =????
25.10.10.4=(25.4).(10.10)=100.100=100001, a , 25 x 10 x 10 x 4 =????
....=( 25.4) .( 10.10) =100.100=100001, a , 25 x 10 x 10 x 4 =????
25 x 10 x 10 x 41, a , 25 x 10 x 10 x 4 =????
( 25*4)*( 10*10)=100*1001, a , 25 x 10 x 10 x 4 =????
25 x 10 x 10 x 4 = (25 x 4) x (10 x 10) = 100 x 100 = 10 0001, a , 25 x 10 x 10 x 4 =????
25 x 10 x 10 x 4 = (25 x 4) x (10 x 10) = 100 x 100 = 10 0001, a , 25 x 10 x 10 x 4 =????