问题 解答题
计算下列各题.(前三题用简便算法)
6.33×101-6.333.7×28+3.7×225×125×4×0.08
10×0.2÷2.512.5×8÷2.5(7.7+1.4)÷0.7.
答案

①6.33×101-6.33,

=6.33×(101-1),

=6.33×100,

=633;

②3.7×28+3.7×2,

=3.7×(28+2),

=3.7×30,

=111;

③25×125×4×0.08,

=(25×4)×(125×0.08),

=100×10,

=1000;

④10×0.2÷2.5,

=2÷2.5,

=0.8;

⑤12.5×8÷2.5,

=100÷2.5,

=400;

⑥(7.7+1.4)÷0.7,

=9.1÷0.7,

=13;

单项选择题 B1型题
单项选择题