(1)(248-327)÷6(2)32-(2+2)2(3)123÷213×125(4)-15821027÷2512a3(5)2πx3+x2-x8-x31x(6)33+(-2)2×18-3+(2005-

题目简介

(1)(248-327)÷6(2)32-(2+2)2(3)123÷213×125(4)-15821027÷2512a3(5)2πx3+x2-x8-x31x(6)33+(-2)2×18-3+(2005-

题目详情

(1)(2
48
-3
27
6

(2)
32
-(2+
2
2
(3)
1
2
3
÷
2
1
3
×
1
2
5

(4)-
15
8
2
10
27
÷
25
12a3

(5)
2
π
x3
+
x
2
-
x
8
-
x
3
1
x

(6)
3
3
+(-2)2×
1
8
-
3
+(
2005
-
2004
)0
题型:解答题难度:中档来源:不详

答案

(1)(2
48
-3
27
)÷
6

=2
8
-3
class="stub"9
2

=4
2
-class="stub"9
2
2
=-class="stub"1
2
2

(2)
32
-(2+
2
)2=4
2
-4-4
2
-2=-6;
(3)
1class="stub"2
3
÷
2class="stub"1
3
×
1class="stub"2
5
=
class="stub"5
3
×class="stub"3
7
×class="stub"7
5
=1;
(4)-class="stub"15
8
2class="stub"10
27
÷
class="stub"25
12a3

=-class="stub"15
8
×
class="stub"64
27
×
12a3
25

=-class="stub"15
8
×class="stub"8
3
×
2a
a
5

=-2a
a

(5)class="stub"2
π
x3
+
class="stub"x
2
-
class="stub"x
8
-class="stub"x
3
class="stub"1
x

=
2x
x
π
+
2x
2
-
2x
4
-
x
3

=(class="stub"2x
π
-class="stub"1
3
x
+
2x
4

(6)class="stub"3
3
+(-2)2×
class="stub"1
8
-
3
+(
2005
-
2004
)0=
3
+4×
2
4
-
3
+1=
2
+1.

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