题目内容
计算
(1)4.25×0.75+75%×4.75+
(2)1÷
-
÷1
(3)2006×97-96×2007.
(1)4.25×0.75+75%×4.75+
| 3 |
| 4 |
(2)1÷
| 1 |
| 3 |
| 1 |
| 3 |
(3)2006×97-96×2007.
解(1):4.25×0.75+75%×4.75+
,
=0.75×(4.25+4.75+1),
=0.75×10,
=7.5;
(2)1÷
-
÷1,
=3-
,
=2
;
(3)2006×97-96×2007,
=(2007-1)×97-96×2007,
=2007×97-97-96×2007,
=2007×(97-96)-97,
=2007-97,
=1910.
| 3 |
| 4 |
=0.75×(4.25+4.75+1),
=0.75×10,
=7.5;
(2)1÷
| 1 |
| 3 |
| 1 |
| 3 |
=3-
| 1 |
| 3 |
=2
| 2 |
| 3 |
(3)2006×97-96×2007,
=(2007-1)×97-96×2007,
=2007×97-97-96×2007,
=2007×(97-96)-97,
=2007-97,
=1910.
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