脱式计算.(能简算的要简算)(1)5.4×(86.5-16.25÷0.5) (2)3-32×1021-27 (3)95.6×18+4.4×1

2024-11-06 20:53:17
推荐回答(1个)
回答(1):

(1)5.4×(86.5-16.25÷0.5),
=5.4×(86.5-32.5),
=5.4×54,
=291.6;

(2)3-

3
2
×
10
21
-
2
7

=3-
5
7
-
2
7

=3-(
5
7
+
2
7
),
=3-1,
=2;

(3)95.6×18+4.4×18,
=(95.6+4.4)×18,
=100×18,
=1800;

(4)
15
16
+(
7
16
-
1
4
)÷
1
2

=
15
16
+
3
16
÷
1
2

=
15
16
+
6
16

=
21
16