题目内容
(1)
+
(2)1
-
+
-
+
-
(3)36.785-(29-3.215)
(4)2009÷2009
+
.
| 2 |
| 3 |
| 3 |
| 5 |
(2)1
| 1 |
| 3 |
| 7 |
| 12 |
| 9 |
| 20 |
| 11 |
| 30 |
| 13 |
| 42 |
| 15 |
| 56 |
(3)36.785-(29-3.215)
(4)2009÷2009
| 2009 |
| 2010 |
| 1 |
| 2011 |
(1)
+
,
=
+
,
=
,
=1
;
(2)1
-
+
-
+
-
,
=(
+
+
)-(
+
+
),
=(
+
+
)-(
+
+
),
=
-
,
=
-
,
=
,
=
;
(3)(3)36.785-(29-3.215),
=36.785+3.215-29,
=40-29,
=11;
(4)2009÷2009
+
,
=2009÷
+
,
=2009÷
+
,
=2009×
+
,
=
+
,
=1.
| 2 |
| 3 |
| 3 |
| 5 |
=
| 10 |
| 15 |
| 9 |
| 15 |
=
| 19 |
| 15 |
=1
| 4 |
| 15 |
(2)1
| 1 |
| 3 |
| 7 |
| 12 |
| 9 |
| 20 |
| 11 |
| 30 |
| 13 |
| 42 |
| 15 |
| 56 |
=(
| 4 |
| 3 |
| 9 |
| 20 |
| 13 |
| 42 |
| 7 |
| 12 |
| 11 |
| 30 |
| 15 |
| 56 |
=(
| 560 |
| 420 |
| 189 |
| 420 |
| 130 |
| 420 |
| 490 |
| 840 |
| 308 |
| 840 |
| 225 |
| 840 |
=
| 879 |
| 420 |
| 1023 |
| 840 |
=
| 1758 |
| 840 |
| 1023 |
| 840 |
=
| 735 |
| 840 |
=
| 7 |
| 8 |
(3)(3)36.785-(29-3.215),
=36.785+3.215-29,
=40-29,
=11;
(4)2009÷2009
| 2009 |
| 2010 |
| 1 |
| 2011 |
=2009÷
| 2009×2010+2009 |
| 2010 |
| 1 |
| 2011 |
=2009÷
| 2009×2011 |
| 2010 |
| 1 |
| 2011 |
=2009×
| 2010 |
| 2009×2011 |
| 1 |
| 2011 |
=
| 2010 |
| 2011 |
| 1 |
| 2011 |
=1.
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