用你喜欢的方法计算下面各题.1042-384÷16×13; 85×0.75+15×75%; 40÷[(34-13)×3]; &nbs...

2024-11-15 06:53:57
推荐回答(1个)
回答1:

(1)1042-384÷16×13
=1024-24×13
=1024-312
=712;

(2)85×0.75+15×75%
=(85+15)×0.75
=100×0.75
=75;

(3)40÷[(

3
4
-
1
3
)×3]
=40÷[
5
12
×3]
=40÷
5
4

=32;

(4)(
5
8
+
1
27
)×8+
19
27

=
5
8
×8+
1
27
×8+
19
27

=5+
8
27
+
19
27

=5+(
8
27
+
19
27

=5+1
=6.