
计算:(1)2011?2.6×2.6+75×1.4(2)37×2.96÷2111÷(157×1.48)×4211(3)223×(178?56)?(78+156)
计算:(1)2011?2.6×2.6+75×1.4(2)37×2.96÷2111÷(157×1.48)×4211(3)223×(178?56)?(78+156)÷314(...
计算:(1)2011?2.6×2.6+75×1.4(2)37×2.96÷2111÷(157×1.48)×4211(3)223×(178?56)?(78+156)÷314(4)[124+314×2+(1712?0.625)]×0.7.
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(1)2011?2.6×2.6+
×1.4
=2011-6.76+3.36,
=2004.24+3.36,
=2007.6;
(2)
×2.96÷2
÷(1
×1.48)×4
=
×
×
÷(
×
)×
,
=
×
×
×
×
,
=
;
(3)2
×(1
?
)?(
+1
)÷3
=
×
-
×
,
=
-
,
=
;
(4)[
+
×2+(1
?0.625)]×0.7
=[
+
7 |
5 |
=2011-6.76+3.36,
=2004.24+3.36,
=2007.6;
(2)
3 |
7 |
1 |
11 |
5 |
7 |
2 |
11 |
=
3 |
7 |
74 |
25 |
11 |
23 |
12 |
7 |
49 |
25 |
46 |
11 |
=
3 |
7 |
74 |
25 |
11 |
23 |
25 |
84 |
46 |
11 |
=
37 |
49 |
(3)2
2 |
3 |
7 |
8 |
5 |
6 |
7 |
8 |
5 |
6 |
1 |
4 |
=
8 |
3 |
25 |
24 |
65 |
24 |
4 |
13 |
=
25 |
9 |
5 |
6 |
=
5 |
3 |
(4)[
1 |
24 |
3 |
14 |
7 |
12 |
=[
1 |
24 |
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