题目内容
用你喜欢的方法算:
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(
| 2005×
| 24×
|
(1)
| 1 |
| 4 |
| 3 |
| 4 |
| 1 |
| 3 |
=
| 1 |
| 4 |
| 1 |
| 4 |
=
| 1 |
| 2 |
(2)
| 40 |
| 13 |
| 7 |
| 80 |
=120×
| 7 |
| 80 |
=
| 21 |
| 2 |
(3)
| 5 |
| 7 |
| 1 |
| 4 |
| 3 |
| 4 |
| 5 |
| 7 |
=
| 5 |
| 7 |
| 1 |
| 4 |
| 3 |
| 4 |
=
| 5 |
| 7 |
(4)(
| 1 |
| 4 |
| 1 |
| 5 |
=
| 1 |
| 4 |
| 1 |
| 5 |
=5+4,
=9;
(5)2005×
| 2003 |
| 2004 |
=(2004+1)×
| 2003 |
| 2004 |
=2004×
| 2003 |
| 2004 |
| 2003 |
| 2004 |
=2003+
| 2003 |
| 2004 |
=2003
| 2003 |
| 2004 |
(6)24×
| 51 |
| 43 |
| 19 |
| 43 |
=24×
| 51 |
| 43 |
| 51 |
| 43 |
=(24+19)×
| 51 |
| 43 |
=43×
| 51 |
| 43 |
=51.
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