计算.5400-2940÷28×27;(20.2×0.4+7.88)÷4.2;(45+14)÷73+710;10÷[83-(513÷526+25)].-数学

题目简介

计算.5400-2940÷28×27;(20.2×0.4+7.88)÷4.2;(45+14)÷73+710;10÷[83-(513÷526+25)].-数学

题目详情

计算.
5400-2940÷28×27;(20.2×0.4+7.88)÷4.2;
4
5
+
1
4
)÷
7
3
+
7
10
10÷[
8
3
-(
5
13
÷
5
26
+
2
5
)].
题型:解答题难度:中档来源:建邺区

答案

(1)5400-2940÷28×27
=5400-105×27,
=5400-2835,
=2565;

(2)(20.2×0.4+7.88)÷4.2
=(8.08+7.88)÷4.2,
=15.96÷4.2,
=3.8;

(3)(class="stub"4
5
+class="stub"1
4
)÷class="stub"7
3
+class="stub"7
10

=class="stub"21
20
÷class="stub"7
3
+class="stub"7
10

=class="stub"9
20
+class="stub"7
10

=1class="stub"3
20
(4)10÷[class="stub"8
3
-(class="stub"5
13
÷class="stub"5
26
+class="stub"2
5
)]
=10÷[class="stub"8
3
-(2+class="stub"2
5
)],
=10÷[class="stub"8
3
-class="stub"12
5
],
=10÷class="stub"4
15

=37class="stub"1
2

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