计算(能够简算的要简算)5400-2940÷28389×42.7+389×57.3(19+127)÷4+23271÷(0.75+13)×132413+38+23+58.-数学

题目简介

计算(能够简算的要简算)5400-2940÷28389×42.7+389×57.3(19+127)÷4+23271÷(0.75+13)×132413+38+23+58.-数学

题目详情

计算(能够简算的要简算)
5400-2940÷28
389×42.7+389×57.3
1
9
+
1
27
)÷4+
23
27
1÷(0.75+
1
3
)×
13
24
1
3
+
3
8
+
2
3
+
5
8
题型:解答题难度:中档来源:不详

答案

(1)5400-2940÷28,
=5400-105,
=5400-(100+5),
=5400-100-5,
=5295;

(2)389×42.7+389×57.3,
=389×(42.7+57.3),
=389×100,
=38900;

(3)(class="stub"1
9
+class="stub"1
27
)÷4+class="stub"23
27

=class="stub"4
27
×class="stub"1
4
+class="stub"23
27

=class="stub"1
27
+class="stub"23
27

=class="stub"8
9


(4)1÷(0.75+class="stub"1
3
)×class="stub"13
24

=1÷(class="stub"3
4
+class="stub"1
3
)×class="stub"13
24

=1÷class="stub"13
12
×class="stub"13
24

=class="stub"12
13
×class="stub"13
24

=class="stub"1
2


(5)class="stub"1
3
+class="stub"3
8
+class="stub"2
3
+class="stub"5
8

=(class="stub"1
3
+class="stub"2
3
)+(class="stub"3
8
+class="stub"5
8
),
=1+1,
=2.

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