脱式计算.162×26-256 203×(86-16) 455+45×5 308+360×6...
脱式计算.162×26-256203×(86-16)455+45×5308+360×60(270+570)×14400-13×12....
脱式计算.162×26-256 203×(86-16) 455+45×5 308+360×60 (270+570)×14 400-13×12.
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(1)162×26-256,
=4212-256,
=3956;
(2)203×(86-16),
=203×70,
=(200+3)×70,
=200×70+3×70,
=14000+210,
=14210;
(3)455+45×5,
=455+225,
=680;
(4)308+360×60,
=308+21600,
=21908;
(5)(270+570)×14,
=840×14,
=11760;
(6)400-13×12,
=400-156,
=(400-100)-56,
=300-56,
=244.
=4212-256,
=3956;
(2)203×(86-16),
=203×70,
=(200+3)×70,
=200×70+3×70,
=14000+210,
=14210;
(3)455+45×5,
=455+225,
=680;
(4)308+360×60,
=308+21600,
=21908;
(5)(270+570)×14,
=840×14,
=11760;
(6)400-13×12,
=400-156,
=(400-100)-56,
=300-56,
=244.
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