(229+323)×29×23=______,813÷7+17×613=______,1.56÷[32×(1-58)+3.6]=______.-数学

题目简介

(229+323)×29×23=______,813÷7+17×613=______,1.56÷[32×(1-58)+3.6]=______.-数学

题目详情

2
29
+
3
23
)×29×23=______,
8
13
÷7+
1
7
×
6
13
=______,
1.56÷[32×(1-
5
8
)+3.6]
=______.
题型:解答题难度:中档来源:不详

答案

(1)(class="stub"2
29
+class="stub"3
23
)×29×23

=class="stub"2
29
×29×23+class="stub"3
23
×29×23

=46+87,
=133;
(2)class="stub"8
13
÷7+class="stub"1
7
×class="stub"6
13

=class="stub"8
13
×class="stub"1
7
+class="stub"1
7
×class="stub"6
13

=(class="stub"8
13
+class="stub"6
13
)×class="stub"1
7

=class="stub"14
13
×class="stub"1
7

=class="stub"2
13

(3)1.56÷[32×(1-class="stub"5
8
)+3.6]

=1.56÷[32×class="stub"3
8
+3.6]

=1.56÷[12+3.6],
=1.56÷15.6,
=0.1.

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