题目内容

计算:
(1)π0+2-2×(2
1
4
)
1
2

(2)0.064-
1
3
-(-
1
8
)0+16
3
4
+0.25
1
2

(3)(
9
25
)
1
2
×(
1
10
)-1+4×(
8
27
)
2
3


(4)
a-4b2
3ab2
(a>0,b>0)


(5)
(a
2
3
b-1)
-
1
2
a
1
2
b
1
3
6a•b5
(1)π0+2-2×(2
1
4
)
1
2
=1+
1
4
×
9
4
=1+
1
4
×
3
2
=
11
8

(2)0.064-
1
3
-(-
1
8
)0+16
3
4
+0.25
1
2
=
1
30.064
-1+
4163
+
0.25
=
1
0.4
-1+8+0.5
=10; 
(3)(
9
25
)
1
2
×(
1
10
)-1+4×(
8
27
)-
2
3
=
9
25
×10+4×
3(
27
8
)2
=
3
5
×10+4×
9
4
=15; 
(4)
a-4b2
3ab2
=
a-4b2a
1
3
b
2
3
=
a-4+
1
3
b2+
2
3
=
a-
11
3
b
8
3
=a-
11
6
b
4
3

(5)
(a
2
3
b-1)-
1
2
a
1
2
b
1
3
6a•b5
=
a-
1
3
b
1
2
a
1
2
b
1
3
a
1
6
b
5
6
=a-
1
3
+
1
2
-
1
6
b
1
2
+
1
3
-
5
6
=a0b0=1.
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