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(1)2÷-0.6(2)(-)÷(3)+0.24×6.4÷0.32(4)93×101(5)×125××8(6)75%×[(100%-)÷25%].
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解:(1)2÷-0.6,
=2.5-0.6,
=1.9;
(2)(-)÷,
=(-)×28,
=28-28,
=16-6,
=10;
(3)+0.24×6.4÷0.32,
=+1.536÷0.32,
=+4.8,
=4.85;
(4)93×101,
=93×100+93×1,
=9300+93,
=9393;
(5)×125××8,
=()×(125×8),
=1000,
=10;
(6)75%×[(100%-)÷25%],
=75%×[÷25%],
=75%×,
=1.8.
解析分析:(1)(3)(6)依据四则混合运算的顺序计算,(2)(4)运用乘法分配律计算,(5)运用乘法交换律和乘法结合律计算.
点评:考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.