9.63-7.52-2.49+0.432000-1998+1996-1994+…-6+4-212×(0.875×12.4+1+4.4×78)×43-14[1-(112+12+110)×212]÷112

题目简介

9.63-7.52-2.49+0.432000-1998+1996-1994+…-6+4-212×(0.875×12.4+1+4.4×78)×43-14[1-(112+12+110)×212]÷112

题目详情

9.63-7.52-2.49+0.432000-1998+1996-1994+…-6+4-2
1
2
×(0.875×12.4+1+4.4×
7
8
)×
4
3
-
1
4
[1-(
1
12+
1
2
+
1
10
)×2
1
2
11
25
题型:解答题难度:中档来源:不详

答案

(1)9.63-7.52-2.49+0.43,
=(9.63+0.43)-(7.52+2.49),
=10.06-10.01,
=0.05;

(2)2000-1998+1996-1994+…-6+4-2,
=++…+(8-6)+(4-2),
=2×500,
=1000;

(3)class="stub"1
2
×(0.875×12.4+1+4.4×class="stub"7
8
)×class="stub"4
3
-class="stub"1
4

=class="stub"2
3
×(class="stub"7
8
×12.4+1+4.4×class="stub"7
8
)-class="stub"1
4

=class="stub"2
3
×[(12.4+4.4)×class="stub"7
8
+1]-class="stub"1
4

=class="stub"2
3
×[16.8×class="stub"7
8
+1]-class="stub"1
4

=class="stub"2
3
×[14.7+1]-class="stub"1
4

=class="stub"2
3
×15.7-class="stub"1
4

=class="stub"2
3
×(15+class="stub"7
10
)-class="stub"1
4

=10+class="stub"7
15
-class="stub"1
4

=10class="stub"13
60


(4)[1-(class="stub"1
12+class="stub"1
2
+class="stub"1
10
)×2class="stub"1
2
class="stub"11
25

=[1-(class="stub"1
class="stub"25
2
+class="stub"1
10
)×2class="stub"1
2
class="stub"11
25

=[1-(class="stub"2
25
+class="stub"1
10
)×2class="stub"1
2
class="stub"11
25

=[1-class="stub"9
50
×class="stub"5
2
class="stub"11
25

=[1-class="stub"9
20
class="stub"25
11

=class="stub"11
20
×class="stub"25
11

=class="stub"5
4

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