Question

九点76×0点七二减个零点76×0点72+0点七二简便运算？

Answer 1

9.76×0.72-0.76×0.72+0.72
=(9.76-0.76+1)×0.72
=10×0.72
=7.2

Answer 2

9.76×0.72-0.76×0.72+0.72
=0.72×（9.76-0.76+1）
=0.72×10
=7.2