6.71×9.9+0.671怎样用简便运算

2024-11-25 13:47:06
推荐回答(1个)
回答1:

6.71×9.9+0.671
=6.71×9.9+6.71×0.1
=6.71×(9.9+0.1)
=6.71×10
=67.1