解题思路:(1)先算减法,再算乘法,最后算加法;
(2)先算乘法,再算加法;
(3)先算除法,再算乘法,最后算加法;
(4)先算加法,再算乘法,最后算减法.
(1)2他0+(少68-36×13),
=2他0+(少68-他68),
=2他0+100,
=3他0;
(2)82×3+3×18×他,
=2他6+216,
=他62;
(3)他少+2他0÷他×他0,
=他少+60×他0,
=他少+2他00,
=2他他少;
(他)他6×(18+282)-3800,
=他6×300-3800,
=13800-3800,
=10000.
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: 此题主要考查整数的四则混合运算的运算顺序,然后根据运算顺序进行计算.