如题所述
第1个回答 2022-12-27
25×9.8
=25×(10-0.2)
=25×10-25×0.2
=250-5
=245
=25×(10-0.2)
=25×10-25×0.2
=250-5
=245
第2个回答 2022-12-27
=25x(10-0.2)
=25x10-25x0.2
=250-5
=245
=25x10-25x0.2
=250-5
=245
第3个回答 2022-12-27
25x(10一0.2)=25x10一25x0.2=245
第4个回答 2022-12-27
=25×(10-0.2)
=25×10-25×0.2
=250-5
=245
=25×10-25×0.2
=250-5
=245