计算:①20+55-2;②(1+5)(5-2);③132-122-32627-1;④3-864-(-2)-2×(-4)2+3(-2)3×(3-10)0.-数学

题目简介

计算:①20+55-2;②(1+5)(5-2);③132-122-32627-1;④3-864-(-2)-2×(-4)2+3(-2)3×(3-10)0.-数学

题目详情

计算:
20
+
5
5
-2

(1+
5
)(
5
-2)

132-122
-
3
26
27
-1

3-
8
64
-(-2)-2×
(-4)2
+
3(-2)3
×(
3
-10)0
题型:解答题难度:中档来源:不详

答案

20
+
5
5
-2

=
2
5
×
5
+
5
×
5
5
-2
=3-2
=1;
(1+
5
)(
5
-2)

=
5
-2+5-2
5

3-
5

132-122
-
3class="stub"26
27
-1

=5-(-class="stub"1
3

=5class="stub"1
3

3-class="stub"8
64
-(-2)-2×
(-4)2
+
3(-2)3
×(
3
-10)0

=-class="stub"1
2
-class="stub"1
4
×4
+(-2)×1
=-class="stub"1
2
-1-2
=-3class="stub"1
2

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