问题 解答题
计算:
300+400-500=3×6÷9=(45-37)×6=
54÷9+34=9×(78-69)=240-8×5=
答案

(1)300+400-500,

=700-500,

=200;

(2)3×6÷9,

=18÷9,

=2;

(3)(45-37)×6,

=8×6,

=48;

(4)54÷9+34,

=6+34,

=40;

(5)9×(78-69),

=9×9,

=81;

(6)240-8×5,

=240-40,

=200;

单项选择题
单项选择题