问题 解答题
用最喜欢的方法计算.
12.5×38×0.8
(8.5-4)×(0.32÷1.6)
6.5×4.6+6.5×15
4
9
8
÷
[
3
4
+(1-
1
8
)].
答案

(1)12.5×38×0.8,

=12.5×0.8×38,

=10×38,

=380;

(2)(8.5-4)×(0.32÷1.6),

=4.5×0.2,

=0.9;

(3)6.5×4.6+6.5×15,

=6.5×(4.6+15),

=6.5×19.6,

=127.4;

(4)4

9
8
÷[
3
4
+(1-
1
8
)],

=4

9
8
÷[
3
4
+
7
8
],

=4

9
8
÷
13
8

=

41
13

判断题
填空题