问题
解答题
计算 (1)4.25×0.75+75%×4.75+
(2)1÷
(3)2006×97-96×2007. |
答案
解(1):4.25×0.75+75%×4.75+
,3 4
=0.75×(4.25+4.75+1),
=0.75×10,
=7.5;
(2)1÷
-1 3
÷1,1 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.