问题
选择题
与10.1×99.8-9.98计算结果不相等的算式是( )
A.10.1×99.8-99.8×0.1
B.(101-1)×9.98
C.(10.1-10)×99.8
D.(10.1-0.1)×99.8
答案
10.1×99.8-9.98,
=10.1×99.8-99.8×0.1;
=(10.1-0.1)×99.8;
10.1×99.8-9.98,
=101×9.98-9.98,
=(101-1)×9.98;
故选:C.