用你喜欢的方法计算下面各题(1)201-5406÷51(2)(59+23)×(78-516)(3)78×139+139÷8(4)6.48÷[(3.3-2.7)×0.9].-数学

题目简介

用你喜欢的方法计算下面各题(1)201-5406÷51(2)(59+23)×(78-516)(3)78×139+139÷8(4)6.48÷[(3.3-2.7)×0.9].-数学

题目详情

用你喜欢的方法计算下面各题
(1)201-5406÷51
(2)(
5
9
+
2
3
)×(
7
8
-
5
16

(3)
7
8
×
13
9
+
13
9
÷8
(4)6.48÷[(3.3-2.7)×0.9].
题型:解答题难度:中档来源:浠水县

答案

(1)201-5406÷51,
=201-106,
=95;

(2)(class="stub"5
9
+class="stub"2
3
)×(class="stub"7
8
-class="stub"5
16
),
=class="stub"11
9
×class="stub"9
16

=class="stub"11
16


(3)class="stub"7
8
×class="stub"13
9
+class="stub"13
9
÷8,
=class="stub"7
8
×class="stub"13
9
+class="stub"13
9
×class="stub"1
8

=(class="stub"7
8
+class="stub"1
8
)×class="stub"13
9

=1×class="stub"13
9

=class="stub"13
9


(4)6.48÷[(3.3-2.7)×0.9],
=6.48÷[0.6×0.9],
=6.48÷0.54,
=12.

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