问题 解答题
简便运算.
(1)(-8)×(+3.67)×(-0.125);
(2)(
2
3
-
7
6
-
2
9
)×(-54)

(3)(-4)×(+25
3
4
)

(4)(-6)×45+(-6)×55.
答案

(1)原式=(-8)×(-0.125)×3.67

=3.67;

(2)原式=-36+63+12

=39;

(3)原式=-4×(25+

3
4

=-100-3

=-103;

(4)原式=-6×(45+55)

=-6×100

=-600.

判断题
单项选择题