问题 解答题

用递等式计算:

130×25-480÷12

56.7-(34.5+1.23)

2340-512÷32×23.

答案

(1)130×25-480÷12

=3250-40

=3210;

(2)56.7-(34.5+1.23)

=56.7-35.73

=20.97;

(3)2340-512÷32×23

=2340-16×23

=2340-368

=1972.

解答题
单项选择题 B1型题