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168-59-41 688-590+112 8×(29×125) 108×125
(40+4)×25 3600÷(36×4) 1300÷25÷4 56×125
28×37+74×37-37×2 142+586+358+114 195×101-195.
分析:运用加法、乘法的运算定律、减法的运算性质、除法的运算性质进行简便计算.
解答:解:(1)168-59-41,
=168-(59+41),
=168-100,
=68;

(2)688-590+112,
=688+112-590,
=800-590,
=210;

(3)8×(29×125),
=29×(8×125),
=29×1000,
=29000;

(4)108×125,
=100×125+8×125,
=12500+1000,
=13500;

(5)(40+4)×25,
=40×25+4×25,
=1000+100,
=1100;

(6)3600÷(36×4),
=3600÷36÷4,
=100÷4,
=25;

(7)1300÷25÷4,
=1300÷(25×4),
=1300÷100,
=13;

(8)56×125,
=7×(8×125),
=7×1000,
=7000;

(9)28×37+74×37-37×2,
=(28+74-2)×37,
=100×37,
=3700;

(10)142+586+358+114,
=(142+358)+(586+114),
=500+700,
=1200;

(11)195×101-195,
=195×(101-1),
=195×100,
=19500.
点评:此题考查的目的是使学生牢固掌握加法、乘法的运算定律和减法、除法的运算性质,并且能够灵活选择简便方法进行计算.
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