题目内容
计算:
(1)π0+2-2×(2
)
;
(2)0.064-
-(-
)0+16
+0.25
;
(3)(
)
×(
)-1+4×(
)-
;
(4)
(a>0,b>0);
(5)
.
(1)π0+2-2×(2
1 |
4 |
1 |
2 |
(2)0.064-
1 |
3 |
1 |
8 |
3 |
4 |
1 |
2 |
(3)(
9 |
25 |
1 |
2 |
1 |
10 |
8 |
27 |
2 |
3 |
(4)
a-4b2•
|
(5)
(a
| ||||||||
|
(1)π0+2-2×(2
)
=1+
×
=1+
×
=
;
(2)0.064-
-(-
)0+16
+0.25
=
-1+
+
=
-1+8+0.5=10;
(3)(
)
×(
)-1+4×(
)-
=
×10+4×
=
×10+4×
=15;
(4)
=
=
=
=a-
b
;
(5)
=
=a-
+
-
b
+
-
=a0b0=1.
1 |
4 |
1 |
2 |
1 |
4 |
|
1 |
4 |
3 |
2 |
11 |
8 |
(2)0.064-
1 |
3 |
1 |
8 |
3 |
4 |
1 |
2 |
1 | |||
|
4 | 163 |
0.25 |
1 |
0.4 |
(3)(
9 |
25 |
1 |
2 |
1 |
10 |
8 |
27 |
2 |
3 |
|
3 | (
| ||
3 |
5 |
9 |
4 |
(4)
a-4b2•
|
a-4b2a
|
a-4+
|
a-
|
11 |
6 |
4 |
3 |
(5)
(a
| ||||||||
|
a-
| ||||||||
a
|
1 |
3 |
1 |
2 |
1 |
6 |
1 |
2 |
1 |
3 |
5 |
6 |
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