计算.(253-159)×(27÷9)6.8+2.37+7.63+4.211-13-2358÷[(12+23)×470.6×(5.3-1.7)÷0.9.-数学

题目简介

计算.(253-159)×(27÷9)6.8+2.37+7.63+4.211-13-2358÷[(12+23)×470.6×(5.3-1.7)÷0.9.-数学

题目详情

计算.
(253-159)×(27÷9)6.8+2.37+7.63+4.211-
1
3
-
2
3
5
8
÷[(
1
2
+
2
3
)×
4
7
0.6×(5.3-1.7)÷0.9.
题型:解答题难度:中档来源:不详

答案

(1)(253-159)×(27÷9),
=94×3,
=282;

(2)6.8+2.37+7.63+4.2,
=(6.8+4.2)+(2.37+7.63),
=11+10,
=21;

(3)11-class="stub"1
3
-class="stub"2
3

=11-(class="stub"1
3
+class="stub"2
3
),
=11-1,
=10;

(4)class="stub"5
8
÷[(class="stub"1
2
+class="stub"2
3
)×class="stub"4
7
],
=class="stub"5
8
÷[class="stub"7
6
×class="stub"4
7
],
=class="stub"5
8
÷class="stub"2
3

=class="stub"15
16


(5)0.6×(5.3-1.7)÷0.9,
=0.6×3.6÷0.9,
=2.16÷0.9,
=2.4.

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