题目内容
【题目】(广州)用简便方法计算
(1)8.37﹣3.25﹣(1.37+2.25)(2) 3.375÷5﹣× (3)9÷13+13÷9+11÷13+14÷9+6÷13
(4)9966×6+6678×18(5) (6)3762÷38+82917÷83
【答案】(1)1.5;(2);(3)5;(4)180000;(5)1;(6)1098
【解析】
试题分析:(1)变形为(8.37﹣1.37)﹣(3.25+2.25)再计算;
(2)将除法变为乘法,再根据乘法分配律计算;
(3)先计算除法,再算同分母加法,最后相加即可求解;
(4)先变形为3322×18+6678×18,再根据乘法分配律计算;
(5)将分母变形为2014+2012×2014﹣1,再根据乘法分配律计算,最后约分计算即可;
(6)先变形为(3800﹣38)÷38+(83000﹣83)÷83,再根据分配律计算.
解答:解:(1)8.37﹣3.25﹣(1.37+2.25)
=(8.37﹣1.37)﹣(3.25+2.25)
=7﹣5.5
=1.5;
(2)3.375÷5﹣×
=3×﹣×
=(3﹣)×
=3×
=;
(3)9÷13+13÷9+11÷13+14÷9+6÷13
=++++
=(++)+(+)
=2+3
=5;
(4)9966×6+6678×18
=3322×18+6678×18
=(3322+6678)×18
=10000×18
=180000;
(5)
=
=
=1;
(6)3762÷38+82917÷83
=(3800﹣38)÷38+(83000﹣83)÷83
=100﹣1+1000﹣1
=1098.
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