考點:整數(shù)四則混合運算,運算定律與簡便運算
專題:運算順序及法則,運算定律及簡算
分析:(1)(4)(7)運用乘法分配律解答,
(2)依據(jù)減法性質(zhì)解答,
(3)依據(jù)除法性質(zhì)解答,
(5)化44=11×4,再運用乘法結合律解答,
(6)運用乘法交換律解答,
(8)運用加法結合律解答,
(9)運用加法交換律和結合律解答.
解答:
解:(1)214×27-14×27
=(214-14)×27
=200×27
=5400;
(2)478-163-137
=478-(163+137)
=478-300
=178;
(3)5000÷125÷8
=5000÷(125×8)
=5000÷1000
=5;
(4)99×34
=100×34-1×34
=3400-34
=3366;
(5)44×25
=11×(4×25)
=11×100
=1100;
(6)125×15×8
=125×8×15
=1000×15
=15000;
(7)136×101-136
=136×(101-1)
=136×100
=13600;
(8)591+482+118
=591+(482+118)
=591+600
=1191;
(9)42+99+68+1
=(42+68)+(99+1)
=110+100
=210.
點評:正確選擇并運用簡便方法解決問題,是本題考查知識點.