问题 解答题

计算(能简算的要简算)

99×8.4+0.84

(37.62+20.76)÷0.042

4.8×6.2÷12.4

3.75÷[0.03×(1.34-0.84)].

答案

(1)99×8.4+0.84

=990×0.84+0.84×1,

=(990+1)×0.84,

=991×0.84,

=832.44;

(2)(37.62+20.76)÷0.042

=58.38÷0.042,

=843÷0.6,

=1390;

(3)4.8×6.2÷12.4

=29.76÷12.4,

=2.4;

(4)3.75÷[0.03×(1.34-0.84)]

=3.75÷[0.03×0.5],

=3.75÷0.015,

=250.

单项选择题 A1型题
单项选择题