问题 解答题
计算下面各题,能简算的要简算.
3200÷80-14×2=32×202=285×38+15×38=
120×25=490÷[(215-208)×4]=95×101-95=
答案

(1)3200÷80-14×2,

=40-28,

=12;

(2)32×202,

=32×(200+2),

=32×200+32×2,

=6400+64,

=6464;

(3)285×38+15×38,

=(285+15)×38,

=300×38,

=11400;

(4)120×25,

=30×4×25,

=30×(4×25),

=30×100,

=3000;

(5)490÷[(215-208)×4],

=490÷[7×4],

=490÷7÷4,

=70÷4,

=17.5;

(6)95×101-95,

=95×(101-1),

=95×100,

=9500.

多项选择题
判断题