问题
解答题
用你喜欢的方法计算. 17×
(
|
答案
(1)17×
+17÷11 23 23 12
=17×
+17×11 23 12 23
=17×(
+11 23
)12 23
=17×1
=17
(2)
÷(2 5
+3 4
)2 5
=
÷2 5 23 20
=
×2 5 20 23
=8 23
(3)(
-5 6
)×2 3 9 10
=
×1 6 9 10
=3 20