五点七乘九点九加零点五七怎样简算

2025-08-20 18:12:21
推荐回答(1个)
回答1:

=5.7*9.9+0.57
=5.7*9.9+5.7*0.1
=5.7*(9.9+0.1)
=5.7*10
=57