数学
耐心算一算:
(1)(-3)+(-4)-(+11)-(-19);
(2)
-
2
3
-(1-0.5)×
1
3
×[2-
(-3)
2
]
;
(3)-3.5÷
7
8
×(-
8
7
)×|-
3
64
|;
(4)
(
2
3
-
1
12
-
4
15
)×(-60)
.
计算(请写出必要步骤)
(1)
-
1
2012
+
1
2
-
1
3
+[3-(-1
)
2
]
(2)
-
3
2
-
5
2
×(-
2
5
)
2
-18÷|-
3
2
|
.
计算
①
-
1
100
-(1-0.5)×
1
3
×[3-
(-3)
2
]
②
-
4
2
×
1
(-4)
2
+|-2
|
3
×(-
1
2
)
3
.
计算与化简:
(1)计算:
-
2
4
÷[1-(-3
)
2
]+(
2
3
-
3
5
)×(-15)
(2)25×
3
4
-(-25)×
1
2
+25×(-
1
4
)
.
-12×(
1
6
+
1
48
)-49
3
28
÷(-5
)
2
.
计算
(1)-18+6+7-5
(2)-2
2
×2-3×(-1)
3
.
计算:
①
-1
2
3
×(0.5-
2
3
)÷1
1
9
②
18÷(
7
9
-
5
6
)×(-0.25
)
2
÷
9
4
×
4
9
-
4
9
×(-
3
2
+
6
2
)×
1
6
.
(1)
-5+6÷(-3)×
1
3
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(2)一-3
2
÷[(-2)
3
-(-4)]
(3)
[2-(1+一.5×
1
3
)]×[5-
(-3)
2
]
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(4)
-36×(
1
4
-
1
9
-
1
12
)÷(-2)
.
计算题:
(1)26-17+(-6)-33
(2)-2
3
÷
4
9
×(-
3
2
)
2
(3)(-36)×(
5
4
-
5
6
-
11
12
)
计算:
(1)
-2+
1
3
÷(-2)
(2)
(-24)×(
1
8
-
1
3
+
1
4
)+(-2
)
3
.
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