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计算:(1)37×159(2)223×6(3)12314×712(4)(116+59−718)×36(5)19×(120×9)×124(6)525×58+58×535.

题目详情
计算:
(1)
3
7
×1
5
9

(2)2
2
3
×6
(3)12
3
14
×
7
12

(4)(
11
6
+
5
9
7
18
)×36
(5)
1
9
×(120×9)×
1
24

(6)5
2
5
×
5
8
+
5
8
×5
3
5
▼优质解答
答案和解析
(1)
3
7
×1
5
9

=
3
7
×
14
9

=
2
3


(2)2
2
3
×6,
=(2+
2
3
)×6,
=2×6+
2
3
×6,
=12+4,
=16;

(3)12
3
14
×
7
12

=(12+
3
14
)×
7
12

=12×
7
12
+
3
14
×
7
12

=7+
1
8

=7
1
8


(4)(
11
6
+
5
9
7
18
)×36,
=
11
6
×36+
5
9
×36-
7
18
×36,
=66+20-14,
=86-14,
=72;

(5)
1
9
×(120×9)×
1
24

=(
1
9
×9)×(120×
1
24
),
=1×5,
=6;

(6)5
2
5
×
5
8
+
5
8
×5
3
5

=(5
2
5
+5
3
5
)×