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(2014•东台市)计算下面各题,能简算的简算198-600÷25×451×9.9+5.118×(42÷15+8.2)6+[(35+110)×521]10-27-17÷151116+813-(1116+513)

题目详情
(2014•东台市)
计算下面各题,能简算的简算
198-600÷25×4
51×9.9+5.1
18×(42÷15+8.2)6+[(
3
5
+
1
10
)×
5
21
]
10-
2
7
-
1
7
÷
1
5
11
16
+
8
13
-(
11
16
+
5
13
▼优质解答
答案和解析
(1)198-600÷25×4
=198-24×4
=198-96
=102;

(2)51×9.9+5.1
=5.1×99+5.1
=5.1×(99+1)
=5.1×100
=510;

(3)18×(42÷15+8.2)
=18×(2.8+8.2)
=18×11
=198;

(4)6+[(
3
5
+
1
10
)×
5
21
]
=6+[
7
10
×
5
21
]
=6+
1
6

=6
1
6


(5)10-
2
7
-
1
7
÷
1
5

=10-
2
7
-
5
7

=10-(
2
7
+
5
7

=10-1
=9;

(6)
11
16
+
8
13
-(
11
16
+
5
13

=(
11
16
-
11
16
)+(
8
13
-
5
13

=0+
3
13

=
3
13