能简算的要简算89+19×15(512-518)×36715×89×521718-45×71857×23+57×1339×2338514×911+1314×511.-数学

题目简介

能简算的要简算89+19×15(512-518)×36715×89×521718-45×71857×23+57×1339×2338514×911+1314×511.-数学

题目详情

能简算的要简算
8
9
+
1
9
×15
5
12
-
5
18
)×36
7
15
×
8
9
×
5
21
7
18
-
4
5
×
7
18
5
7
×
2
3
+
5
7
×
1
3
39×
23
38
5
14
×
9
11
+
13
14
×
5
11
题型:解答题难度:中档来源:不详

答案


(1)class="stub"8
9
+class="stub"1
9
×15,
=class="stub"8
9
+class="stub"5
3

=class="stub"23
9


(2)(class="stub"5
12
-class="stub"5
18
)×36,
=class="stub"5
12
×36-class="stub"5
18
×36,
=15-10,
=5;

(3)class="stub"7
15
×class="stub"8
9
×class="stub"5
21

=class="stub"7
15
×class="stub"5
21
×class="stub"8
9

=class="stub"1
9
×class="stub"8
9

=class="stub"8
81


(4)class="stub"7
18
-class="stub"4
5
×class="stub"7
18

=class="stub"7
18
×(1-class="stub"4
5
),
=class="stub"7
18
×class="stub"1
5

=class="stub"7
90


(5)class="stub"5
7
×class="stub"2
3
+class="stub"5
7
×class="stub"1
3

=class="stub"5
7
×(class="stub"2
3
+class="stub"1
3
),
=class="stub"5
7


(6)39×class="stub"23
38

=(38+1)×class="stub"23
38

=38×class="stub"23
38
+1×class="stub"23
38

=23+class="stub"23
38

=23class="stub"23
38


(7)class="stub"5
14
×class="stub"9
11
+class="stub"13
14
×class="stub"5
11

=class="stub"5
14
×class="stub"9
11
+class="stub"5
14
×class="stub"13
11

=class="stub"5
14
×(class="stub"9
11
+class="stub"13
11
),
=class="stub"5
14
×2,
=class="stub"5
7

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