问题 解答题
计算下面各题,能简算的用简便方法计算
2272-6360÷24
[6.85-(0.65+0.7)]÷2.5
9
10
-
4
5
×
5
8
)÷
5
12

5
8
+
1
27
)×8+
19
27
答案

(1)2272-6360÷24

=2272-265,

=2007;

(2)[6.85-(0.65+0.7)]÷2.5

=[6.85-1.35]÷2.5,

=5.5÷2.5,

=2.2;

(3)(

9
10
-
4
5
×
5
8
)÷
5
12

=(

9
10
-
1
2
)×
12
5

=

2
5
×
12
5

=

24
25

(4)(

5
8
+
1
27
)×8+
19
27

=

5
8
×8+
1
27
×8+
19
27

=8+(

8
27
+
19
27
),

=8+1,

=9.

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