问题
选择题
已知112=121,53=125,则-11002和-0.53的值分别为( )
A.-1210000,0.0125
B.+1210000,0.125
C.+1210000,-0.0125
D.-1210000,-0.125
答案
∵112=121,53=125,
∴-11002=-(11×100)2=-112×1002=-1210000;
-0.53=-0.13×53=-0.001×125=-0.125.
故选D.