问题 解答题

计算下列各题:

(1)(+4.3)-(-4)+(-2.3)-(+4);

(2)-4-2×32+(-2×32);

(3)(-48)÷(-2)3-(-25)×(-4)+(-2)2

答案

(1)(+4.3)-(-4)+(-2.3)-(+4)

=4.3+4-2.3-4

=2;

(2)-4-2×32+(-2×32)

=-4-64-64

=-132;

(3)(-48)÷(-2)3-(-25)×(-4)+(-2)2

=6-100+4

=-90.

单项选择题 B型题
单项选择题