问题 解答题

计算下面各题,怎样算简便就怎样算.

6.15+4.9-9.85

1500÷25÷4

19.92-(14.37-5.43)

432-(361+153÷17)

142+35×6-315

27×13+72×13+13.

答案

(1)6.15+4.9-9.85,

=11.05-9.85,

=1.2;

(2)1500÷25÷4,

=1500÷(25×4),

=1500÷100,

=15;

(3)19.92-(14.37-5.43),

=19.92-8.94,

=10.98;

(4)432-(361+153÷17),

=432-(361+9),

=432-370,

=52;

(5)142+35×6-315,

=142+210-315,

=352-315,

=37;

(6)27×13+72×13+13,

=(27+72+1)×13,

=100×13,

=1300.

单项选择题 A2型题
单项选择题