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(2012•道真县)计算,能简算的要简算18+57+6.875+2714×45+910÷92064×3.75+3.75×36(329+113)×13×29.

题目详情
(2012•道真县)计算,能简算的要简算
1
8
+
5
7
+6.875+
2
7

1
4
×
4
5
+
9
10
÷
9
20

64×3.75+3.75×36
 (
3
29
+
1
13
)×13×29.
▼优质解答
答案和解析
(1)
7
8
+
5
7
+6.875+
2
7

=(
7
8
+6
7
8
)+(
5
7
+
2
7
),
=7
3
4
+1,
=8
3
4


(2)
1
4
×
4
5
+
9
10
÷
9
20

=
1
5
+
9
10
×
20
9

=
1
5
+2,
=2
1
5


(3)64×3.75+3.75×36
=3.75×(64+36),
=3.75×100,
=375;

(4)(
3
29
+
1
13
)×13×29
=
3
29
×13×29+
1
13
×13×29,
=39+29,
=68.