问题
填空题
437+275+163=(437+163)+275,这是运用了加法的______律和______律.
答案
437+275+163,
=(437+163)+275,
=600+275,
=875.
故答案为:交换律,结合律.
437+275+163=(437+163)+275,这是运用了加法的______律和______律.
437+275+163,
=(437+163)+275,
=600+275,
=875.
故答案为:交换律,结合律.