计算142+(58-512)×45(1-12×74)÷101147×14+25%×3789×[34-(716-14)].-六年级数学

题目简介

计算142+(58-512)×45(1-12×74)÷101147×14+25%×3789×[34-(716-14)].-六年级数学

题目详情

计算
1
42
+(
5
8
-
5
12
)×
4
5
(1-
1
2
×
7
4
)÷
10
11
4
7
×
1
4
+25%×
3
7
8
9
×[
3
4
-(
7
16
-
1
4
)].
题型:解答题难度:中档来源:不详

答案

(1)class="stub"1
42
+(class="stub"5
8
-class="stub"5
12
)×class="stub"4
5

=class="stub"1
42
+class="stub"5
8
×class="stub"4
5
-class="stub"5
12
×class="stub"4
5

=class="stub"1
42
+class="stub"1
2
-class="stub"1
3

=class="stub"11
21
-class="stub"1
3

=class="stub"4
21


(2)(1-class="stub"1
2
×class="stub"7
4
)÷class="stub"10
11

=(1-class="stub"7
8
)÷class="stub"10
11

=class="stub"1
8
÷class="stub"10
11

=class="stub"11
80


(3)class="stub"4
7
×class="stub"1
4
+25%×class="stub"3
7

=25%×(class="stub"4
7
+class="stub"3
7
),
=25%×1,
=25%;

(4)class="stub"8
9
×[class="stub"3
4
-(class="stub"7
16
-class="stub"1
4
)],
=class="stub"8
9
×[class="stub"3
4
-class="stub"3
16
],
=class="stub"8
9
×class="stub"9
16

=class="stub"1
2

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