简算:1121×18+1021÷8(15-15×45)×724(34+3447)÷17(56+29)×45÷1920.-数学

题目简介

简算:1121×18+1021÷8(15-15×45)×724(34+3447)÷17(56+29)×45÷1920.-数学

题目详情

简算:
11
21
×
1
8
+
10
21
÷8
(15-15×
4
5
)×
7
24
(34+
34
47
)÷17
5
6
+
2
9
)×
4
5
÷
19
20
题型:解答题难度:中档来源:不详

答案

(1)class="stub"11
21
×class="stub"1
8
+class="stub"10
21
÷
8,
=class="stub"11
21
×class="stub"1
8
+class="stub"10
21
×class="stub"1
8

=class="stub"1
8
×
class="stub"11
21
+class="stub"10
21
),
=class="stub"1
8
×1,
=class="stub"1
8


(2)(15-15×class="stub"4
5
)×class="stub"7
24

=3×class="stub"7
24

=class="stub"7
8


(3)(34+class="stub"34
47
)÷17,
=34÷17+class="stub"34
47
÷17,
=2+class="stub"34
47
×class="stub"1
17

=2+class="stub"2
47

=2class="stub"2
47


(4)(class="stub"5
6
+class="stub"2
9
)×class="stub"4
5
÷class="stub"19
20

=(class="stub"45
54
+class="stub"12
54
)×class="stub"4
5
×class="stub"20
19

=class="stub"57
54
×class="stub"16
19

=class="stub"8
9

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