题目内容

脱式计算,能简算的要简算:
5
18
+
13
18
×9

11
27
+(
5
8
+
2
27
)×8
(5.6-1.6÷2)×2.5
5
6
+
7
12
+
3
8
)÷
1
48
(1)9×
5
18
+
13
18
×9,
=9×(
5
18
+
13
18
),
=9×1,
=9;

(2)
11
27
+(
5
8
+
2
27
)×8,
=
11
27
+
5
8
×8+
2
27
×8,
=
11
27
+
16
27
+5,
=1+5,
=6;

(3)(5.6-1.6÷2)×2.5,
=(5.6-0.8)×2.5,
=4.8×2.5,
=1.2×(4×2.5),
=1.2×10,
=12;

(4)(
5
6
+
7
12
+
3
8
)÷
1
48

=(
5
6
+
7
12
+
3
8
)×48,
=
5
6
×48+
7
12
×48+
3
8
×48,
=40+28+18,
=86.
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