问题
解答题
计算,能简便算就简便算.
2014×
|
答案
(1)
÷3 14
×1015 28
=
×102 5
=4;
(2)
×9 5
÷2 3 18 35
=
×6 5 35 18
=
;7 3
(3)2014×2012 2013
=(2013+1)×2012 2013
=2013×
+1×2012 2013 2012 2013
=2012+2012 2013
=2012
;2012 2013
(4)
×1 21
×(2014×42×85)1 17
=(
×42)×(1 21
×85)×20141 17
=2×5×2014
=10×2014
=20140;
(5)
×19 17
-13 15
÷15×132 17
=
×19 17
-13 15
×(2 17
×13)1 15
=
×19 17
-13 15
×2 17 13 15
=(
-19 17
)×2 17 13 15
=1×13 15
=
.13 15