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(2013•六合区模拟)看谁都能算对!(能简算的请写出简算过程)624-3.2×1.5÷0.19.43+0.78-2.4356-[(15+13)÷89]1627×5+1127÷15.

题目详情
(2013•六合区模拟)看谁都能算对!(能简算的请写出简算过程)
624-3.2×1.5÷0.1 9.43+0.78-2.43
5
6
-[(
1
5
+
1
3
)÷
8
9
]
16
27
×5+
11
27
÷
1
5
▼优质解答
答案和解析
(1)624-3.2×1.5÷0.1,
=624-4.8÷0.1,
=624-48,
=576;

(2)9.43+0.78-2.43,
=9.43-2.43+0.78,
=7+0.78,
=7.78;

(3)
5
6
-[(
1
5
+
1
3
)÷
8
9
],
=
5
6
-[
8
15
÷
8
9
],
=
5
6
-
3
5

=
7
30


(4)
16
27
×5+
11
27
÷
1
5

=
16
27
×5+
11
27
×5,
=(
16
27
+
11
27
)×5,
=1×5,
=5.