解题思路:(1)(3)按照从左到右顺序计算解答,
(2)按照先算第二级运算,再算第一级运算顺序计算解答,
(4)(5)运用乘法分配律解答,
(6)按照先算括号里面的,再算除法,最后算减法顺序计算解答.
(1)[1/3]×[5/16]×[3/5]
=[5/48]×[3/5]
=[1/16];
(2)1-[1/2]×[4/5]
=1-[2/5]
=[3/5];
(3)3×[1/5]÷[1/5]×3
=[3/5]÷[1/5]×3
=3×3
=9;
(4)24×([3/8]-[1/4])
=24×[3/8]-24×[1/4]
=9-6
=3;
(5)85×[3/4]+15×75%
=(85+15)×75%
=100×75%
=75;
(6)5-([1/2]+[1/6])÷[1/3]
=5-[2/3]÷
1
3
=5-2
=3.
点评:
本题考点: 分数的四则混合运算.
考点点评: (1)明确运算的顺序并能正确进行计算,(2)正确运用乘法分配律解决问题,是此类题目考查知识点.