9.8*25的简便运算法怎么算

2023-10-01 09:34:49
好评回答

9.8×25

=(10-0.2)×25

=10×25-0.2×2化督置5

=250-5

=245

无副题

其他回答
9.8×25
=(10-0.2)×25
=10×25-0.2×25
=250-5
=245

(10-0.2)*25=10*25-0.2*25

9.8乘25简便计算
“ 9.8乘25=(10-0.2)×25=10×25-0.2×25=250-5=245 ”

10*25-0.2*25

=250-5

=245

9.8×25
=(10-0.2)×25
=10×25-0.2×25 (乘法分配律)
=250-5
=245

9.8*25

=25×(10-0.2)

=250-5

=245

9.8*25

=(10-0.2)*25

=10*25-0.2-25

=250-5

=245

9.8×25
=10×25-0.2×25
=250-5
=245

 9.8×25

=﹙10-0.2﹚×25

=10×25-0.2×25

=250-5

=245

9.8*25

=(10-0.2)×25

=10×25-0.2×25

=250-5

=245