解题思路:先算出左边四个算式的运算结果,再算出右边四个算式的结果,找出相等的连线.
左边:
(1)(18×3)×16,
=54×16,
=864,
(2)18×186÷3,
=3348÷3,
=1116;
(3)186÷3÷6,
=62÷6,
=10.
•
3;
(4)186÷6×54,
=31×54,
=1674;
右边:
A,18÷2×186,
=9×186,
=1674;
B,18×(186×3),
=18×558,
=10044;
C,186×(18÷3),
=186×6,
=1116;
D,186÷9×18,
=[62/3]×18,
=372;
(2)与C相等;(4)与A相等,其它都不相等;连线如下:
点评:
本题考点: 整数四则混合运算;运算定律与简便运算.
考点点评: 1、如果是同一级运算,一般按从左往右依次进行计算;2、如果有括号,先算括号里面的,由此算出结果,再连线.