分析:(1)(2)可根據(jù)乘法分配律計(jì)算;
(3)可根據(jù)一個數(shù)減兩個數(shù)等于用這個數(shù)減去兩個數(shù)的和的減法性質(zhì)計(jì)算;
(4)可根據(jù)加法交換律與一個數(shù)減兩個數(shù)等于用這個數(shù)減去兩個數(shù)的和的減法性質(zhì)計(jì)算;
(5)可根據(jù)一個數(shù)除兩個數(shù),等于用這個數(shù)除以這兩個數(shù)的積的除法性質(zhì)計(jì)算;
(6)可根據(jù)加法交換律與結(jié)合律計(jì)算.
解答:解:(1)186×101-186
=(101-1)×186,
=100×186,
=18600;
(2)675×39+325×39
=(675+325)×39,
=1000×39,
=39000;
(3)415-176-24
=415-(176+24),
=415-200,
=215;
(4)463-187+137-113
=(463+137)-(187+113),
=600-300,
=300;
(5)6400÷25÷4
=6400÷(25×4),
=6400÷100,
=64;
(6)8.29+3.7+0.71+6.3
=(8.29+0.71)+(3.7+6.3),
=9+10,
=19.
點(diǎn)評:完成此類題目要注意分析題目中的數(shù)據(jù),然后運(yùn)用合適的方法計(jì)算.