计算下列各题,能简算的要简算.(124-85)×12÷26????????????2000÷125÷8???????????????????528-53-47125×

发布时间:2020-07-31 02:59:33

计算下列各题,能简算的要简算.
(124-85)×12÷26????????????2000÷125÷8???????????????????528-53-47
125×32×25???????????????????35×99+35??????????????????????17×23-23×7.

网友回答

解:(1)(124-85)×12÷26,
=39×12÷26,
=468÷26,
=18;

(2)2000÷125÷8,
=2000÷(125×8),
=2000÷1000,
=2;

(3)528-53-47,
=528-(53+47),
=528-100,
=428;

(4)125×32×25,
=125×(4×8)×25,
=(125×8)×(4×25),
=1000×100,
=100000;

(5)35×99+35,
=35×(99+1),
=35×100,
=3500;

(6)17×23-23×7,
=(17-7)×23,
=10×23,
=230.
解析分析:(1)先算减法,再算乘法,最后算除法;(2)2000连续除以125与8,等于除以125与8的乘积;(3)528连续减去53与47,等于减去53与47的和;(4)把32拆成4×8,然后再根据乘法交换律和结合律进行简算;(5)根据乘法分配律进行简算;(6)根据乘法分配律进行简算.

点评:四则混合运算,先弄清运算顺序,然后再进一步计算即可,能简算的要简算.
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