题目内容

(1)0.25×(-2)3-[4÷(-
2
3
)
2
+1]+(-1)2010

(2)-1100-(1-0.5)×
1
3
×[3-(-3)2]

(3)(-
1
6
+
3
4
-
1
12
)÷(
1
48
)

(4)(-
18
7
m3n-6nm)-(
3
7
nm3-6mn)
(1)原式=
1
4
×(-8)-(4×
9
4
+1)+1
=-2-10+1
=-11;

(2)原式=-1-
1
2
×
1
3
×(-6)
=-1-(-1)
=-1+1
=0;

(3)原式=(-
1
6
+
3
4
-
1
12
)×48
=-8+36-4
=24;

(4)原式=-
18
7
m3n-6mn-
3
7
m3n+6mn
=-3m3n.
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