脱式计算,能简便的要写出简便过程1.29+3.7+0.71+6.3 528×78-428×78 125×(92×8) 57×101-57 (
脱式计算,能简便的要写出简便过程1.29+3.7+0.71+6.3528×78-428×78125×(92×8)57×101-57(40+4)×2535×9819×96-...
脱式计算,能简便的要写出简便过程1.29+3.7+0.71+6.3 528×78-428×78 125×(92×8) 57×101-57 (40+4)×25 35×98 19×96-962÷74 (520+480)÷50×4 400-(1300÷65+35) 86.7-(14.3-3.8) 72.8-8.6+5.84 40-(3.5-2.75+0.86)
展开
1个回答
展开全部
(1)1.29+3.7+0.71+6.3,
=(1.29+0.71)+(6.3+3.7),
=2+10,
=12;
(2)528×78-428×78,
=(528-428)×78,
=100×78,
=7800;
(3)125×(92×8),
=(125×8)×92,
=1000×92,
=92000;
(4)57×101-57,
=57×(101-1),
=57×100,
=5700;
(5)(40+4)×25,
=40×25+4×25,
=1000+100,
=1100;
(6)35×98,
=35×(100-2),
=3500-70,
=3430;
(7)19×96-962÷74,
=19×(100-4)-13,
=1900-76-13,
=1900-(76+13),
=1900-89,
=1811;
(8)(520+480)÷50×4,
=1000÷50×4,
=20×4,
=80;
(9)400-(1300÷65+35),
=400-(20+35),
=400-55,
=345;
(10)86.7-(14.3-3.8),
=86.7-10.5,
=76.2;
(11)72.8-8.6+5.84,
=64.2+5.84,
=70.04;
(12)40-(3.5-2.75+0.86),
=40-1.61,
=38.39.
=(1.29+0.71)+(6.3+3.7),
=2+10,
=12;
(2)528×78-428×78,
=(528-428)×78,
=100×78,
=7800;
(3)125×(92×8),
=(125×8)×92,
=1000×92,
=92000;
(4)57×101-57,
=57×(101-1),
=57×100,
=5700;
(5)(40+4)×25,
=40×25+4×25,
=1000+100,
=1100;
(6)35×98,
=35×(100-2),
=3500-70,
=3430;
(7)19×96-962÷74,
=19×(100-4)-13,
=1900-76-13,
=1900-(76+13),
=1900-89,
=1811;
(8)(520+480)÷50×4,
=1000÷50×4,
=20×4,
=80;
(9)400-(1300÷65+35),
=400-(20+35),
=400-55,
=345;
(10)86.7-(14.3-3.8),
=86.7-10.5,
=76.2;
(11)72.8-8.6+5.84,
=64.2+5.84,
=70.04;
(12)40-(3.5-2.75+0.86),
=40-1.61,
=38.39.
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询