19 199 5 252-(37 52)-63 29 29×19用简便方式
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19+199+5+252-(37+52)-63+29+29×19
=20+200+5+250-(37+52)-63+29+29×19
=20+200+5+250-(37+52)-63+29×（1+19）
=20+200+5+250-(37+52)-63+29×20
=20+200+5+250-(37+52+63)+29×20
=20+200+5+250-(37+63+52)+29×20
=20+200+5+250-(100+52)+29×20
=20+200+5+250-100-52+29×20
=20+100+5+250-52+29×20
=100+5+250-52+（1+29）×20
=100+5+250-52+30×20
=100+5+250-52+600
=700+5+250-52
=5+950-52
=955-52
=903
=20+200+5+250-(37+52)-63+29+29×19
=20+200+5+250-(37+52)-63+29×（1+19）
=20+200+5+250-(37+52)-63+29×20
=20+200+5+250-(37+52+63)+29×20
=20+200+5+250-(37+63+52)+29×20
=20+200+5+250-(100+52)+29×20
=20+200+5+250-100-52+29×20
=20+100+5+250-52+29×20
=100+5+250-52+（1+29）×20
=100+5+250-52+30×20
=100+5+250-52+600
=700+5+250-52
=5+950-52
=955-52
=903
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