3.75×0.98+6.25×0.98=9.8
3.75×0.98+6.25×0.98
=(3.75+6.25)×0.98
=10×0.98
=9.8
3.75×0.98+6.25×0.98
=(3.75+6.25)×0.98
=10×0.98
=9.8
3.75×0.98+6.25×0.98
=0.98×(3.75+6.25)
=0.98×10
=9.8
望采纳。
解:原式=0.98×(9.75+6.25)
=0.98×16
=(1-0.02)×16
=1×16-0.02×16
=16-0.32
=15.68