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用简便方法计算①537-449-659+747②57÷52+307×0.4③(59+45-715)×45④2012×20112013.
题目详情
用简便方法计算
①5
-4
-6
+7
②
÷
+
×0.4
③(
+
-
)×45
④2012×
.
-4
-6
+7
②
÷
+
×0.4
③(
+
-
)×45
④2012×
.
3 3 7 7
-6
+7
②
÷
+
×0.4
③(
+
-
)×45
④2012×
.
4 4 9 9
+7
②
÷
+
×0.4
③(
+
-
)×45
④2012×
.
5 5 9 9
②
÷
+
×0.4
③(
+
-
)×45
④2012×
.
4 4 7 7
÷
+
×0.4
③(
+
-
)×45
④2012×
.
5 5 7 7
+
×0.4
③(
+
-
)×45
④2012×
.
5 5 2 2
×0.4
③(
+
-
)×45
④2012×
.
30 30 7 7
+
-
)×45
④2012×
.
5 5 9 9
-
)×45
④2012×
.
4 4 5 5
)×45
④2012×
.
7 7 15 15
.
2011 2011 2013 2013
①5
3 |
7 |
4 |
9 |
5 |
9 |
4 |
7 |
②
5 |
7 |
5 |
2 |
30 |
7 |
③(
5 |
9 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
3 |
7 |
4 |
9 |
5 |
9 |
4 |
7 |
②
5 |
7 |
5 |
2 |
30 |
7 |
③(
5 |
9 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
3 |
7 |
4 |
9 |
5 |
9 |
4 |
7 |
②
5 |
7 |
5 |
2 |
30 |
7 |
③(
5 |
9 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
4 |
9 |
5 |
9 |
4 |
7 |
②
5 |
7 |
5 |
2 |
30 |
7 |
③(
5 |
9 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
5 |
9 |
4 |
7 |
②
5 |
7 |
5 |
2 |
30 |
7 |
③(
5 |
9 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
4 |
7 |
5 |
7 |
5 |
2 |
30 |
7 |
③(
5 |
9 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
5 |
7 |
5 |
2 |
30 |
7 |
③(
5 |
9 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
5 |
2 |
30 |
7 |
③(
5 |
9 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
30 |
7 |
5 |
9 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
5 |
9 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
4 |
5 |
7 |
15 |
④2012×
2011 |
2013 |
7 |
15 |
2011 |
2013 |
2011 |
2013 |
▼优质解答
答案和解析
(1)5
-4
-6
+7
,
=5
+7
-(4
+6
),
=13-11,
=2;
(2)
÷
+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
3 3 37 7 7-4
-6
+7
,
=5
+7
-(4
+6
),
=13-11,
=2;
(2)
÷
+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
4 4 49 9 9-6
+7
,
=5
+7
-(4
+6
),
=13-11,
=2;
(2)
÷
+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
5 5 59 9 9+7
,
=5
+7
-(4
+6
),
=13-11,
=2;
(2)
÷
+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
4 4 47 7 7,
=5
+7
-(4
+6
),
=13-11,
=2;
(2)
÷
+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
3 3 37 7 7+7
-(4
+6
),
=13-11,
=2;
(2)
÷
+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
4 4 47 7 7-(4
+6
),
=13-11,
=2;
(2)
÷
+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
4 4 49 9 9+6
),
=13-11,
=2;
(2)
÷
+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
5 5 59 9 9),
=13-11,
=2;
(2)
÷
+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
5 5 57 7 7÷
+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
5 5 52 2 2+
×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
30 30 307 7 7×0.4,
=(
+
)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
5 5 57 7 7+
30 30 307 7 7)×
,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
2 2 25 5 5,
=5×
,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
2 2 25 5 5,
=2;
(3)(
+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
5 5 59 9 9+
-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
4 4 45 5 5-
)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
7 7 715 15 15)×45,
=
×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
5 5 59 9 9×45+
×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
. +
4 4 45 5 5×45−
×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
. −
7 7 715 15 15×45,
=25+36-21,
=40;
(4)2012×
,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
2011 2011 20112013 2013 2013,
=(2013-1)×
,
=2013×
-1×
,
=2011−
,
=2000
.
2011 2011 20112013 2013 2013,
=2013×
-1×
,
=2011−
,
=2000
.
2011 2011 20112013 2013 2013-1×
,
=2011−
,
=2000
.
2011 2011 20112013 2013 2013,
=2011−
,
=2000
. −
2011 2011 20112013 2013 2013,
=2000
.
2 2 22013 2013 2013.
3 |
7 |
4 |
9 |
5 |
9 |
4 |
7 |
=5
3 |
7 |
4 |
7 |
4 |
9 |
5 |
9 |
=13-11,
=2;
(2)
5 |
7 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
3 |
7 |
4 |
9 |
5 |
9 |
4 |
7 |
=5
3 |
7 |
4 |
7 |
4 |
9 |
5 |
9 |
=13-11,
=2;
(2)
5 |
7 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
4 |
9 |
5 |
9 |
4 |
7 |
=5
3 |
7 |
4 |
7 |
4 |
9 |
5 |
9 |
=13-11,
=2;
(2)
5 |
7 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
5 |
9 |
4 |
7 |
=5
3 |
7 |
4 |
7 |
4 |
9 |
5 |
9 |
=13-11,
=2;
(2)
5 |
7 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
4 |
7 |
=5
3 |
7 |
4 |
7 |
4 |
9 |
5 |
9 |
=13-11,
=2;
(2)
5 |
7 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
3 |
7 |
4 |
7 |
4 |
9 |
5 |
9 |
=13-11,
=2;
(2)
5 |
7 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
4 |
7 |
4 |
9 |
5 |
9 |
=13-11,
=2;
(2)
5 |
7 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
4 |
9 |
5 |
9 |
=13-11,
=2;
(2)
5 |
7 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
5 |
9 |
=13-11,
=2;
(2)
5 |
7 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
5 |
7 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
5 |
2 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
30 |
7 |
=(
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
5 |
7 |
30 |
7 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
2 |
5 |
=5×
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
2 |
5 |
=2;
(3)(
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
5 |
9 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
4 |
5 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
7 |
15 |
=
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
5 |
9 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
4 |
5 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
7 |
15 |
=25+36-21,
=40;
(4)2012×
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
2011 |
2013 |
=(2013-1)×
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
2011 |
2013 |
=2013×
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
2011 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
2011 |
2013 |
=2011−
2011 |
2013 |
=2000
2 |
2013 |
2011 |
2013 |
=2000
2 |
2013 |
2 |
2013 |
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