考點(diǎn):小數(shù)四則混合運(yùn)算,運(yùn)算定律與簡(jiǎn)便運(yùn)算
專題:運(yùn)算順序及法則,運(yùn)算定律及簡(jiǎn)算
分析:(1)根據(jù)減法的性質(zhì)簡(jiǎn)算即可;
(2)根據(jù)乘法分配律簡(jiǎn)算即可;
(3)根據(jù)減法的性質(zhì)簡(jiǎn)算即可;
(4)根據(jù)減法的性質(zhì)簡(jiǎn)算即可;
(5)根據(jù)除法的性質(zhì)簡(jiǎn)算即可;
(6)根據(jù)乘法分配律簡(jiǎn)算即可.
解答:
解:(1)13.83-(9.56-6.17)-3.44
=13.83-3.39-3.44
=13.83-(3.39+3.44)
=13.83-6.83
=7
(2)2.67×72+2.67×29-2.67
=2.67×(72+29-1)
=2.67×100
=267
(3)16.05-(6.05-0.56)
=16.05-6.05+0.56
=10+0.56
=10.56
(4)51.27-8.66-1.34
=51.27-(8.66+1.34)
=51.27-10
=41.27
(5)386÷125÷8+9.998
=386÷(125×8)+9.998
=0.386+9.998
=10.384
(6)347×9.8+347×5.3-347×5.1
=347×(9.8+5.3-5.1)
=347×10
=3470
點(diǎn)評(píng):此題主要考查了乘法分配律以及減法、除法的性質(zhì)在小數(shù)四則混合運(yùn)算中的應(yīng)用.