22.計(jì)算下列各題. 查看更多

 

題目列表(包括答案和解析)

計(jì)算下列各題.
(1)(+
1
3
)+(-4)+(+
2
3
)+(+4)
(2)(+4
1
5
)+(-
5
6
)+(-3.2)+(-
1
6

(3)(-103)+(+1
3
4
)+(-97)+(+100)+(-1
1
4

查看答案和解析>>

計(jì)算下列各題.
(1)
3
x
-
6
1-x
-
x+5
x2-x

(2)(x2-1)(
1
x-1
-
1
x+1
-1)

(3)
1
x+1
-
x-3
x2-1
x2-2x+1
(x-1)(x-3)

(4)
3-x
2x-4
÷(x+2-
5
x-2
)

(5)(1-
a-b
a-2b
a2-4b2
a2-4ab+4b2

查看答案和解析>>

計(jì)算下列各題.
(1)sin230°+cos245°+
2
sin60°•tan45°;
(2)
cos230°+cos260°
tan60°•cot30°
+tan60°;
(3)tan2°tan4°•tan6°…tan88°.

查看答案和解析>>

計(jì)算下列各題.
(1)
1
3
0.09
+
1
5
0.25
;
(2)
(-
1
5
)
2
-
(-6)2
+
1-(
4
5
)
2

(3)
3-1
+
3(-1)2
+
(-1)2
;
(4)
2
+|
2
-2|-
(-16)2
÷(-
1
2
)×
3-8

查看答案和解析>>

計(jì)算下列各題.
(1)-32+|-8|-(π-2009)0-1÷(-2)-1
(2)20082-2007×2009
(3)2(
1
3
x3-
1
2
y3+
1
4
)
-3(
1
2
x3-
1
3
y3+
1
6
)

(4)(-ab23•(-9a3b)÷(-3a3b5
(5)(2x+y-3)(2x-y-3)

查看答案和解析>>


同步練習(xí)冊答案