用自己喜欢的方法计算.357+288+143 129+253+171+47 &n...
用自己喜欢的方法计算.357+288+143129+253+171+4725×35×48×(125+6)38×10135×34+65×34....
用自己喜欢的方法计算.357+288+143 129+253+171+47 25×35×4 8×( 125+6 ) 38×101 35×34+65×34.
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(1)357+288+143,
=357+143+288,
=500+288,
=788;
(2)129+253+171+47,
=(129+171)+(253+47),
=300+300,
=600;
(3)25×35×4,
=25×4×35,
=100×35,
=3500;
(4)8×( 125+6 ),
=8×125+8×6,
=1000+48,
=1048;
(5)38×101,
=38×(100+1),
=38×100+38×1,
=3800+38,
=3838;
(6)35×34+65×34,
=(35+65)×34,
=100×34,
=3400.
=357+143+288,
=500+288,
=788;
(2)129+253+171+47,
=(129+171)+(253+47),
=300+300,
=600;
(3)25×35×4,
=25×4×35,
=100×35,
=3500;
(4)8×( 125+6 ),
=8×125+8×6,
=1000+48,
=1048;
(5)38×101,
=38×(100+1),
=38×100+38×1,
=3800+38,
=3838;
(6)35×34+65×34,
=(35+65)×34,
=100×34,
=3400.
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