问题
解答题
(
|
答案
(
+2 5
×99)÷2 5 2 5
=(
+2 5
×99)×2 5 5 2
=
×2 5
+5 2
×99×2 5 5 2
=1+
×2 5
×995 2
=1+1×99
=1+99
=100.
(
|
(
+2 5
×99)÷2 5 2 5
=(
+2 5
×99)×2 5 5 2
=
×2 5
+5 2
×99×2 5 5 2
=1+
×2 5
×995 2
=1+1×99
=1+99
=100.