问题 解答题
下面各题,怎样算简便就怎样算.
2007+2007×99
1.5×[0.02÷(2.1-2.09)]
1
4
×125×
1
125
×8
21×
1
8
+48×12.5%+11×
1
8
答案

(1)2007+2007×99,

=2007×(1+99),

=2007×100,

=200700;

(2)1.5×[0.02÷(2.1-2.09)],

=1.5×[0.02÷0.01],

=1.5×2,

=3;

(3)

1
4
×125×
1
125
×8,

=(

1
4
×8)×(125×
1
125
),

=2×1,

=2;

(4)21×

1
8
+48×12.5%+11×
1
8

=

1
8
×(21+48+11),

=

1
8
×80,

=10.

单项选择题 共用题干题
单项选择题 A1/A2型题