问题 解答题
计算下面各题.
60+40×3
75-75÷5720÷8×9
19×(100-78)(86+54)÷28207-(47-29)
答案

(1)60+40×3,

=60+120,

=180;

(2)75-75÷5,

=75-15,

=60;

(3)720÷8×9,

=90×9,

=810;

(4)19×(100-78),

=19×22,

=418;

(5)(86+54)÷28,

=140÷28,

=5;

(6)207-(47-29),

=207-18,

=189.

填空题
单项选择题