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能简算的要简算7.6×35%+6.5×0.76(115+217)×15×17200320032006+2004÷200420042005.

题目详情
能简算的要简算
7.6×35%+6.5×0.76
1
15
+
2
17
)×15×17
2003
2003
2006
+2004÷2004
2004
2005
▼优质解答
答案和解析
(1)7.6×35%+6.5×0.76,
=7.6×0.35+0.65×7.6,
=(0.35+0.65)×7.6,
=7.6;

(2)(
1
15
+
2
17
)×15×17,
=
1
15
×15×17+
2
17
×15×17,
=17+30,
=47;

(3)2003
2003
2006
+2004÷2004
2004
2005

=2003
2003
2006
+2004÷
2004×2005+2004
2005

=2003
2003
2006
+2004×
2005
2004×2006

=2003
2003
2006
+
2005
2006

=2003
4008
2006

=2004
1001
1003